406204644 has 24 divisors (see below), whose sum is σ = 967978368. Its totient is φ = 132520480.

The previous prime is 406204637. The next prime is 406204657. The reversal of 406204644 is 446402604.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 359547 + ... + 360674.

It is an arithmetic number, because the mean of its divisors is an integer number (40332432).

Almost surely, 2^406204644 is an apocalyptic number.

It is an amenable number.

406204644 is an abundant number, since it is smaller than the sum of its proper divisors (561773724).

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

406204644 is a wasteful number, since it uses less digits than its factorization.

406204644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720275 (or 720273 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 406204644 is about 20154.5191954559. The cubic root of 406204644 is about 740.5964536203.

The spelling of 406204644 in words is "four hundred six million, two hundred four thousand, six hundred forty-four".