1253708020 has 24 divisors (see below), whose sum is σ = 2672085024. Its totient is φ = 493997856.

The previous prime is 1253708009. The next prime is 1253708021. The reversal of 1253708020 is 208073521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253708020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253708021) 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, 466462 + ... + 469141.

It is an arithmetic number, because the mean of its divisors is an integer number (111336876).

Almost surely, 2^1253708020 is an apocalyptic number.

1253708020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253708020 is an abundant number, since it is smaller than the sum of its proper divisors (1418377004).

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

1253708020 is a wasteful number, since it uses less digits than its factorization.

1253708020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935679 (or 935677 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1253708020 is about 35407.7395494262. The cubic root of 1253708020 is about 1078.2814517700.

The spelling of 1253708020 in words is "one billion, two hundred fifty-three million, seven hundred eight thousand, twenty".