251072632 has 8 divisors (see below), whose sum is σ = 470761200. Its totient is φ = 125536312.

The previous prime is 251072629. The next prime is 251072681. The reversal of 251072632 is 236270152.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 251072632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15692032 + ... + 15692047.

It is an arithmetic number, because the mean of its divisors is an integer number (58845150).

Almost surely, 2^251072632 is an apocalyptic number.

It is an amenable number.

251072632 is a deficient number, since it is larger than the sum of its proper divisors (219688568).

251072632 is a wasteful number, since it uses less digits than its factorization.

251072632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31384085 (or 31384081 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 251072632 is about 15845.2715975461. The cubic root of 251072632 is about 630.8601939104.

The spelling of 251072632 in words is "two hundred fifty-one million, seventy-two thousand, six hundred thirty-two".