1253233620 has 72 divisors (see below), whose sum is σ = 3942285984. Its totient is φ = 334194336.

The previous prime is 1253233613. The next prime is 1253233649. The reversal of 1253233620 is 263323521.

1253233620 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 2 + 33 + 620 = 666.

1253233620 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124074 + ... + 133793.

It is an arithmetic number, because the mean of its divisors is an integer number (54753972).

Almost surely, 2^1253233620 is an apocalyptic number.

1253233620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253233620 is an abundant number, since it is smaller than the sum of its proper divisors (2689052364).

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

1253233620 is a wasteful number, since it uses less digits than its factorization.

1253233620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257891 (or 257877 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 1253233620 is about 35401.0398152371. The cubic root of 1253233620 is about 1078.1454282708.

The spelling of 1253233620 in words is "one billion, two hundred fifty-three million, two hundred thirty-three thousand, six hundred twenty".