230402540 has 24 divisors (see below), whose sum is σ = 499454592. Its totient is φ = 89187840.

The previous prime is 230402539. The next prime is 230402563. The reversal of 230402540 is 45204032.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 185189 + ... + 186428.

It is an arithmetic number, because the mean of its divisors is an integer number (20810608).

Almost surely, 2^230402540 is an apocalyptic number.

230402540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230402540 is an abundant number, since it is smaller than the sum of its proper divisors (269052052).

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

230402540 is a wasteful number, since it uses less digits than its factorization.

230402540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371657 (or 371655 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 230402540 is about 15179.0164371741. The cubic root of 230402540 is about 613.0497987144.

Adding to 230402540 its reverse (45204032), we get a palindrome (275606572).

The spelling of 230402540 in words is "two hundred thirty million, four hundred two thousand, five hundred forty".