402752220 has 48 divisors (see below), whose sum is σ = 1214455200. Its totient is φ = 99138816.

The previous prime is 402752197. The next prime is 402752239. The reversal of 402752220 is 22257204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257395 + ... + 258954.

It is an arithmetic number, because the mean of its divisors is an integer number (25301150).

Almost surely, 2^402752220 is an apocalyptic number.

It is an amenable number.

402752220 is an abundant number, since it is smaller than the sum of its proper divisors (811702980).

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

402752220 is a wasteful number, since it uses less digits than its factorization.

402752220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516374 (or 516372 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 402752220 is about 20068.6875505101. The cubic root of 402752220 is about 738.4923162419.

The spelling of 402752220 in words is "four hundred two million, seven hundred fifty-two thousand, two hundred twenty".