400542246 has 48 divisors (see below), whose sum is σ = 969228624. Its totient is φ = 123241824.

The previous prime is 400542239. The next prime is 400542269. The reversal of 400542246 is 642245004.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25381 + ... + 38016.

It is an arithmetic number, because the mean of its divisors is an integer number (20192263).

Almost surely, 2^400542246 is an apocalyptic number.

400542246 is an abundant number, since it is smaller than the sum of its proper divisors (568686378).

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

400542246 is a wasteful number, since it uses less digits than its factorization.

400542246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63427 (or 63415 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 400542246 is about 20013.5515588813. The cubic root of 400542246 is about 737.1390912849.

The spelling of 400542246 in words is "four hundred million, five hundred forty-two thousand, two hundred forty-six".