868990032 has 50 divisors (see below), whose sum is σ = 2515113018. Its totient is φ = 289662912.

The previous prime is 868990019. The next prime is 868990033. The reversal of 868990032 is 230099868.

It can be written as a sum of positive squares in only one way, i.e., 858724416 + 10265616 = 29304^2 + 3204^2 .

It is a super-2 number, since 2×868990032² = 1510287351430722048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 868990032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868990033) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 333963 + ... + 336554.

Almost surely, 2^868990032 is an apocalyptic number.

It is an amenable number.

868990032 is an abundant number, since it is smaller than the sum of its proper divisors (1646122986).

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

868990032 is a wasteful number, since it uses less digits than its factorization.

868990032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670537 (or 670522 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 868990032 is about 29478.6368748624. The cubic root of 868990032 is about 954.2707194200.

The spelling of 868990032 in words is "eight hundred sixty-eight million, nine hundred ninety thousand, thirty-two".