1257468372 has 36 divisors (see below), whose sum is σ = 3185980980. Its totient is φ = 418182912.

The previous prime is 1257468371. The next prime is 1257468383. The reversal of 1257468372 is 2738647521.

1257468372 is a `hidden beast` number, since 1 + 2 + 574 + 6 + 8 + 3 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 172029456 + 1085438916 = 13116^2 + 32946^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257468371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24747 + ... + 55922.

Almost surely, 2^1257468372 is an apocalyptic number.

1257468372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1257468372 is an abundant number, since it is smaller than the sum of its proper divisors (1928512608).

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

1257468372 is a wasteful number, since it uses less digits than its factorization.

1257468372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81112 (or 81107 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 1257468372 is about 35460.8004985787. The cubic root of 1257468372 is about 1079.3584358325.

The spelling of 1257468372 in words is "one billion, two hundred fifty-seven million, four hundred sixty-eight thousand, three hundred seventy-two".