80645952 has 56 divisors (see below), whose sum is σ = 214884000. Its totient is φ = 26692096.

The previous prime is 80645951. The next prime is 80645959. The reversal of 80645952 is 25954608.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80645952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80645951) 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, 27199 + ... + 30017.

Almost surely, 2^80645952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80645952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107442000).

80645952 is an abundant number, since it is smaller than the sum of its proper divisors (134238048).

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

80645952 is a wasteful number, since it uses less digits than its factorization.

80645952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 80645952 is about 8980.3091260825. The cubic root of 80645952 is about 432.0435484220.

The spelling of 80645952 in words is "eighty million, six hundred forty-five thousand, nine hundred fifty-two".