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427910428 = 221129491683
BaseRepresentation
bin11001100000010…
…110010100011100
31002211012002202101
4121200112110130
51334021113203
6110243334444
713414115161
oct3140262434
91084162671
10427910428
111aa5a9490
12bb381424
136a86444a
1440b8c068
152787841d
hex1981651c

427910428 has 48 divisors (see below), whose sum is σ = 848050560. Its totient is φ = 187140800.

The previous prime is 427910411. The next prime is 427910459. The reversal of 427910428 is 824019724.

It is a super-2 number, since 2×4279104282 = 366214668782286368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 626175 + ... + 626857.

It is an arithmetic number, because the mean of its divisors is an integer number (17667720).

Almost surely, 2427910428 is an apocalyptic number.

It is an amenable number.

427910428 is a deficient number, since it is larger than the sum of its proper divisors (420140132).

427910428 is a wasteful number, since it uses less digits than its factorization.

427910428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 427910428 is about 20685.9959392822. The cubic root of 427910428 is about 753.5596285901.

The spelling of 427910428 in words is "four hundred twenty-seven million, nine hundred ten thousand, four hundred twenty-eight".

Divisors: 1 2 4 11 22 29 44 58 116 319 491 638 683 982 1276 1366 1964 2732 5401 7513 10802 14239 15026 19807 21604 28478 30052 39614 56956 79228 156629 217877 313258 335353 435754 626516 670706 871508 1341412 3688883 7377766 9725237 14755532 19450474 38900948 106977607 213955214 427910428