82151944 has 16 divisors (see below), whose sum is σ = 176040000. Its totient is φ = 35207952.

The previous prime is 82151941. The next prime is 82151957. The reversal of 82151944 is 44915128.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82151941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733444 + ... + 733555.

It is an arithmetic number, because the mean of its divisors is an integer number (11002500).

Almost surely, 2^82151944 is an apocalyptic number.

It is an amenable number.

82151944 is an abundant number, since it is smaller than the sum of its proper divisors (93888056).

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

82151944 is a wasteful number, since it uses less digits than its factorization.

82151944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467012 (or 1467008 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 82151944 is about 9063.7709591538. The cubic root of 82151944 is about 434.7163236121.

The spelling of 82151944 in words is "eighty-two million, one hundred fifty-one thousand, nine hundred forty-four".