1251276288 has 40 divisors (see below), whose sum is σ = 3333482328. Its totient is φ = 417091584.

The previous prime is 1251276287. The next prime is 1251276317. The reversal of 1251276288 is 8826721521.

It is a super-2 number, since 2×1251276288² = 3131384697822117888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251276287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405781 + ... + 408852.

Almost surely, 2^1251276288 is an apocalyptic number.

It is an amenable number.

1251276288 is an abundant number, since it is smaller than the sum of its proper divisors (2082206040).

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

1251276288 is an frugal number, since it uses more digits than its factorization.

1251276288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814654 (or 814638 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 1251276288 is about 35373.3838924127. The cubic root of 1251276288 is about 1077.5838441942.

The spelling of 1251276288 in words is "one billion, two hundred fifty-one million, two hundred seventy-six thousand, two hundred eighty-eight".