1251372328 has 16 divisors (see below), whose sum is σ = 2362072500. Its totient is φ = 621486336.

The previous prime is 1251372313. The next prime is 1251372337. The reversal of 1251372328 is 8232731521.

It can be written as a sum of positive squares in 2 ways, for example, as 1243408644 + 7963684 = 35262^2 + 2822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1251372293 and 1251372302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523713 + ... + 526096.

Almost surely, 2^1251372328 is an apocalyptic number.

It is an amenable number.

1251372328 is a deficient number, since it is larger than the sum of its proper divisors (1110700172).

1251372328 is a wasteful number, since it uses less digits than its factorization.

1251372328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049964 (or 1049960 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 1251372328 is about 35374.7413842137. The cubic root of 1251372328 is about 1077.6114129802.

The spelling of 1251372328 in words is "one billion, two hundred fifty-one million, three hundred seventy-two thousand, three hundred twenty-eight".