1257794952 has 32 divisors (see below), whose sum is σ = 3155856000. Its totient is φ = 417749184.

The previous prime is 1257794939. The next prime is 1257794957. The reversal of 1257794952 is 2594977521.

It is a junction number, because it is equal to n+sod(n) for n = 1257794895 and 1257794904.

It is not an unprimeable number, because it can be changed into a prime (1257794957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87952 + ... + 101247.

It is an arithmetic number, because the mean of its divisors is an integer number (98620500).

Almost surely, 2^1257794952 is an apocalyptic number.

1257794952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1257794952 is an abundant number, since it is smaller than the sum of its proper divisors (1898061048).

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

1257794952 is a wasteful number, since it uses less digits than its factorization.

1257794952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189485 (or 189481 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 51.

The square root of 1257794952 is about 35465.4050026219. The cubic root of 1257794952 is about 1079.4518686309.

The spelling of 1257794952 in words is "one billion, two hundred fifty-seven million, seven hundred ninety-four thousand, nine hundred fifty-two".