81960024 has 32 divisors (see below), whose sum is σ = 205135920. Its totient is φ = 27288576.

The previous prime is 81959987. The next prime is 81960029. The reversal of 81960024 is 42006918.

It is a junction number, because it is equal to n+sod(n) for n = 81959973 and 81960000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81960029) 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, 29812 + ... + 32444.

Almost surely, 2^81960024 is an apocalyptic number.

It is an amenable number.

81960024 is an abundant number, since it is smaller than the sum of its proper divisors (123175896).

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

81960024 is a wasteful number, since it uses less digits than its factorization.

81960024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939 (or 3935 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 81960024 is about 9053.1775637066. The cubic root of 81960024 is about 434.3775375108.

The spelling of 81960024 in words is "eighty-one million, nine hundred sixty thousand, twenty-four".