81246032 has 40 divisors (see below), whose sum is σ = 183309696. Its totient is φ = 34160256.

The previous prime is 81246031. The next prime is 81246037. The reversal of 81246032 is 23064218.

It is a junction number, because it is equal to n+sod(n) for n = 81245992 and 81246010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81246031) 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, 908 + ... + 12779.

Almost surely, 2^81246032 is an apocalyptic number.

It is an amenable number.

81246032 is an abundant number, since it is smaller than the sum of its proper divisors (102063664).

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

81246032 is a wasteful number, since it uses less digits than its factorization.

81246032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13755 (or 13749 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 81246032 is about 9013.6580809347. The cubic root of 81246032 is about 433.1125018136.

The spelling of 81246032 in words is "eighty-one million, two hundred forty-six thousand, thirty-two".