27731950944 has 48 divisors (see below), whose sum is σ = 77078515248. Its totient is φ = 8700219392.

The previous prime is 27731950943. The next prime is 27731950951. The reversal of 27731950944 is 44905913772.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×27731950944² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27731950943) 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, 8494677 + ... + 8497940.

It is an arithmetic number, because the mean of its divisors is an integer number (1605802401).

Almost surely, 2^27731950944 is an apocalyptic number.

27731950944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27731950944 is an abundant number, since it is smaller than the sum of its proper divisors (49346564304).

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

27731950944 is a wasteful number, since it uses less digits than its factorization.

27731950944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16992647 (or 16992639 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 27731950944 in words is "twenty-seven billion, seven hundred thirty-one million, nine hundred fifty thousand, nine hundred forty-four".