253290940 has 24 divisors (see below), whose sum is σ = 607898592. Its totient is φ = 86842560.

The previous prime is 253290899. The next prime is 253290949. The reversal of 253290940 is 49092352.

It is a junction number, because it is equal to n+sod(n) for n = 253290896 and 253290905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253290949) 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, 904471 + ... + 904750.

It is an arithmetic number, because the mean of its divisors is an integer number (25329108).

Almost surely, 2^253290940 is an apocalyptic number.

253290940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253290940 is an abundant number, since it is smaller than the sum of its proper divisors (354607652).

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

253290940 is a wasteful number, since it uses less digits than its factorization.

253290940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809237 (or 1809235 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 253290940 is about 15915.1167133641. The cubic root of 253290940 is about 632.7127001057.

The spelling of 253290940 in words is "two hundred fifty-three million, two hundred ninety thousand, nine hundred forty".