402230520 has 48 divisors (see below), whose sum is σ = 1307250360. Its totient is φ = 107261376.

The previous prime is 402230503. The next prime is 402230531. The reversal of 402230520 is 25032204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402230493 and 402230502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558294 + ... + 559013.

Almost surely, 2^402230520 is an apocalyptic number.

402230520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402230520 is an abundant number, since it is smaller than the sum of its proper divisors (905019840).

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

402230520 is a wasteful number, since it uses less digits than its factorization.

402230520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117324 (or 1117317 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 402230520 is about 20055.6854781880. The cubic root of 402230520 is about 738.1733128992.

Adding to 402230520 its reverse (25032204), we get a palindrome (427262724).

The spelling of 402230520 in words is "four hundred two million, two hundred thirty thousand, five hundred twenty".