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6990015054 = 2311234604753
BaseRepresentation
bin1101000001010001…
…10010101001001110
3200001010221120000110
412200220302221032
5103303420440204
63113340140450
7335135101431
oct64050625116
920033846013
106990015054
112a67754850
121430b37726
1387521b1a9
144a44bb818
152ad9e5889
hex1a0a32a4e

6990015054 has 32 divisors (see below), whose sum is σ = 15914029824. Its totient is φ = 2026090880.

The previous prime is 6990015049. The next prime is 6990015079. The reversal of 6990015054 is 4505100996.

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, 2300859 + ... + 2303894.

It is an arithmetic number, because the mean of its divisors is an integer number (497313432).

Almost surely, 26990015054 is an apocalyptic number.

6990015054 is an abundant number, since it is smaller than the sum of its proper divisors (8924014770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6990015054 is a wasteful number, since it uses less digits than its factorization.

6990015054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604792.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 6990015054 is about 83606.3098934524. The cubic root of 6990015054 is about 1912.0212016507.

The spelling of 6990015054 in words is "six billion, nine hundred ninety million, fifteen thousand, fifty-four".

Divisors: 1 2 3 6 11 22 23 33 46 66 69 138 253 506 759 1518 4604753 9209506 13814259 27628518 50652283 101304566 105909319 151956849 211818638 303913698 317727957 635455914 1165002509 2330005018 3495007527 6990015054