81201932 has 12 divisors (see below), whose sum is σ = 162403920. Its totient is φ = 34800816.

The previous prime is 81201929. The next prime is 81201941. The reversal of 81201932 is 23910218.

81201932 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1450007 + ... + 1450062.

It is an arithmetic number, because the mean of its divisors is an integer number (13533660).

Almost surely, 2^81201932 is an apocalyptic number.

It is an amenable number.

81201932 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81201932 is a wasteful number, since it uses less digits than its factorization.

81201932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900080 (or 2900078 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 81201932 is about 9011.2114612853. The cubic root of 81201932 is about 433.0341237572.

The spelling of 81201932 in words is "eighty-one million, two hundred one thousand, nine hundred thirty-two".