400166652 has 12 divisors (see below), whose sum is σ = 933722216. Its totient is φ = 133388880.

The previous prime is 400166647. The next prime is 400166653. The reversal of 400166652 is 256661004.

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

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400166653) 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, 16673599 + ... + 16673622.

Almost surely, 2^400166652 is an apocalyptic number.

It is an amenable number.

400166652 is an abundant number, since it is smaller than the sum of its proper divisors (533555564).

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

400166652 is a wasteful number, since it uses less digits than its factorization.

400166652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33347228 (or 33347226 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 400166652 is about 20004.1658661390. The cubic root of 400166652 is about 736.9086107237.

The spelling of 400166652 in words is "four hundred million, one hundred sixty-six thousand, six hundred fifty-two".