253157940 has 96 divisors (see below), whose sum is σ = 900130560. Its totient is φ = 57863808.

The previous prime is 253157939. The next prime is 253157951. The reversal of 253157940 is 49751352.

253157940 is digitally balanced in base 2, 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 (36).

It is a junction number, because it is equal to n+sod(n) for n = 253157895 and 253157904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29707 + ... + 37266.

It is an arithmetic number, because the mean of its divisors is an integer number (9376360).

Almost surely, 2^253157940 is an apocalyptic number.

253157940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253157940 is an abundant number, since it is smaller than the sum of its proper divisors (646972620).

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

253157940 is a wasteful number, since it uses less digits than its factorization.

253157940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66998 (or 66990 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 253157940 is about 15910.9377473485. The cubic root of 253157940 is about 632.6019374622.

The spelling of 253157940 in words is "two hundred fifty-three million, one hundred fifty-seven thousand, nine hundred forty".