253040740 has 24 divisors (see below), whose sum is σ = 534958200. Its totient is φ = 100535808.

The previous prime is 253040737. The next prime is 253040773. The reversal of 253040740 is 47040352.

It can be written as a sum of positive squares in 4 ways, for example, as 802816 + 252237924 = 896^2 + 15882^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39477 + ... + 45436.

It is an arithmetic number, because the mean of its divisors is an integer number (22289925).

Almost surely, 2^253040740 is an apocalyptic number.

253040740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253040740 is an abundant number, since it is smaller than the sum of its proper divisors (281917460).

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

253040740 is a wasteful number, since it uses less digits than its factorization.

253040740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85071 (or 85069 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 253040740 is about 15907.2543199636. The cubic root of 253040740 is about 632.5043009284.

The spelling of 253040740 in words is "two hundred fifty-three million, forty thousand, seven hundred forty".