278498612232 has 96 divisors (see below), whose sum is σ = 782924513280. Its totient is φ = 92747229120.

The previous prime is 278498612213. The next prime is 278498612269. The reversal of 278498612232 is 232216894872.

278498612232 is a `hidden beast` number, since 2 + 78 + 498 + 61 + 2 + 23 + 2 = 666.

It is a super-2 number, since 2×278498612232² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2059257 + ... + 2190327.

It is an arithmetic number, because the mean of its divisors is an integer number (8155463680).

Almost surely, 2^278498612232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278498612232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391462256640).

278498612232 is an abundant number, since it is smaller than the sum of its proper divisors (504425901048).

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

278498612232 is a wasteful number, since it uses less digits than its factorization.

278498612232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132185 (or 132169 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 278498612232 in words is "two hundred seventy-eight billion, four hundred ninety-eight million, six hundred twelve thousand, two hundred thirty-two".