1253027920 has 20 divisors (see below), whose sum is σ = 2913290100. Its totient is φ = 501211136.

The previous prime is 1253027873. The next prime is 1253027933. The reversal of 1253027920 is 297203521.

It can be written as a sum of positive squares in 2 ways, for example, as 911073856 + 341954064 = 30184^2 + 18492^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7831345 + ... + 7831504.

It is an arithmetic number, because the mean of its divisors is an integer number (145664505).

Almost surely, 2^1253027920 is an apocalyptic number.

1253027920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253027920 is an abundant number, since it is smaller than the sum of its proper divisors (1660262180).

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

1253027920 is a wasteful number, since it uses less digits than its factorization.

1253027920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662862 (or 15662856 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 1253027920 is about 35398.1344141185. The cubic root of 1253027920 is about 1078.0864377666.

The spelling of 1253027920 in words is "one billion, two hundred fifty-three million, twenty-seven thousand, nine hundred twenty".