Search a number
-
+
28982118949 = 75378118919
BaseRepresentation
bin11010111111011110…
…000000101000100101
32202210210222012001221
4122333132000220211
5433323410301244
621151511220341
72044126642420
oct327736005045
982723865057
1028982118949
1111322717a23
12574a0776b1
13296b537114
14158d1a49b7
15b495b4784
hex6bf780a25

28982118949 has 8 divisors (see below), whose sum is σ = 33747373440. Its totient is φ = 24373102416.

The previous prime is 28982118943. The next prime is 28982118983. The reversal of 28982118949 is 94981128982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28982118949 - 25 = 28982118917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28982118943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39059089 + ... + 39059830.

It is an arithmetic number, because the mean of its divisors is an integer number (4218421680).

Almost surely, 228982118949 is an apocalyptic number.

It is an amenable number.

28982118949 is a deficient number, since it is larger than the sum of its proper divisors (4765254491).

28982118949 is an equidigital number, since it uses as much as digits as its factorization.

28982118949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78118979.

The product of its digits is 5971968, while the sum is 61.

The spelling of 28982118949 in words is "twenty-eight billion, nine hundred eighty-two million, one hundred eighteen thousand, nine hundred forty-nine".

Divisors: 1 7 53 371 78118919 546832433 4140302707 28982118949