253435930 has 64 divisors (see below), whose sum is σ = 524880000. Its totient is φ = 87243520.

The previous prime is 253435913. The next prime is 253435933. The reversal of 253435930 is 39534352.

It is a super-2 number, since 2×253435930² = 128459541229929800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253435933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168321 + ... + 169819.

It is an arithmetic number, because the mean of its divisors is an integer number (8201250).

Almost surely, 2^253435930 is an apocalyptic number.

253435930 is an abundant number, since it is smaller than the sum of its proper divisors (271444070).

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

253435930 is a wasteful number, since it uses less digits than its factorization.

253435930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599.

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 253435930 is about 15919.6711649456. The cubic root of 253435930 is about 632.8334038779.

The spelling of 253435930 in words is "two hundred fifty-three million, four hundred thirty-five thousand, nine hundred thirty".