406622652 has 12 divisors (see below), whose sum is σ = 948786216. Its totient is φ = 135540880.

The previous prime is 406622641. The next prime is 406622653. The reversal of 406622652 is 256226604.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×406622652² = 330683962239026208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406622653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16942599 + ... + 16942622.

It is an arithmetic number, because the mean of its divisors is an integer number (79065518).

Almost surely, 2^406622652 is an apocalyptic number.

It is an amenable number.

406622652 is an abundant number, since it is smaller than the sum of its proper divisors (542163564).

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

406622652 is a wasteful number, since it uses less digits than its factorization.

406622652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33885228 (or 33885226 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 406622652 is about 20164.8866101449. The cubic root of 406622652 is about 740.8504053475.

The spelling of 406622652 in words is "four hundred six million, six hundred twenty-two thousand, six hundred fifty-two".