27997507224 has 64 divisors (see below), whose sum is σ = 78248073600. Its totient is φ = 9275236128.

The previous prime is 27997507211. The next prime is 27997507231. The reversal of 27997507224 is 42270579972.

It is a happy number.

27997507224 is a `hidden beast` number, since 27 + 9 + 97 + 507 + 2 + 24 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362394 + ... + 432809.

It is an arithmetic number, because the mean of its divisors is an integer number (1222626150).

Almost surely, 2^27997507224 is an apocalyptic number.

27997507224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27997507224 is an abundant number, since it is smaller than the sum of its proper divisors (50250566376).

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

27997507224 is a wasteful number, since it uses less digits than its factorization.

27997507224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795381 (or 795371 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The spelling of 27997507224 in words is "twenty-seven billion, nine hundred ninety-seven million, five hundred seven thousand, two hundred twenty-four".