1252718428 has 24 divisors (see below), whose sum is σ = 2418479280. Its totient is φ = 564074880.

The previous prime is 1252718377. The next prime is 1252718429. The reversal of 1252718428 is 8248172521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252718429) 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, 291658 + ... + 295921.

It is an arithmetic number, because the mean of its divisors is an integer number (100769970).

Almost surely, 2^1252718428 is an apocalyptic number.

It is an amenable number.

1252718428 is a deficient number, since it is larger than the sum of its proper divisors (1165760852).

1252718428 is a wasteful number, since it uses less digits than its factorization.

1252718428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587637 (or 587635 counting only the distinct ones).

The product of its digits is 71680, while the sum is 40.

The square root of 1252718428 is about 35393.7625578293. The cubic root of 1252718428 is about 1077.9976696987.

The spelling of 1252718428 in words is "one billion, two hundred fifty-two million, seven hundred eighteen thousand, four hundred twenty-eight".