1252760920 has 32 divisors (see below), whose sum is σ = 2858418720. Its totient is φ = 494045440.

The previous prime is 1252760897. The next prime is 1252760963. The reversal of 1252760920 is 290672521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217717 + ... + 223396.

It is an arithmetic number, because the mean of its divisors is an integer number (89325585).

Almost surely, 2^1252760920 is an apocalyptic number.

1252760920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252760920 is an abundant number, since it is smaller than the sum of its proper divisors (1605657800).

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

1252760920 is a wasteful number, since it uses less digits than its factorization.

1252760920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441195 (or 441191 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1252760920 is about 35394.3628279985. The cubic root of 1252760920 is about 1078.0098580612.

The spelling of 1252760920 in words is "one billion, two hundred fifty-two million, seven hundred sixty thousand, nine hundred twenty".