81602448 has 40 divisors (see below), whose sum is σ = 223208928. Its totient is φ = 25600512.

The previous prime is 81602429. The next prime is 81602461. The reversal of 81602448 is 84420618.

81602448 is a modest number, since divided by 2448 gives 816 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49186 + ... + 50817.

Almost surely, 2^81602448 is an apocalyptic number.

It is an amenable number.

81602448 is an abundant number, since it is smaller than the sum of its proper divisors (141606480).

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

81602448 is a wasteful number, since it uses less digits than its factorization.

81602448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100031 (or 100025 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 81602448 is about 9033.4073305702. The cubic root of 81602448 is about 433.7449144124.

The spelling of 81602448 in words is "eighty-one million, six hundred two thousand, four hundred forty-eight".