401664130 has 32 divisors (see below), whose sum is σ = 832245120. Its totient is φ = 136719360.

The previous prime is 401664121. The next prime is 401664139. The reversal of 401664130 is 31466104.

It is an interprime number because it is at equal distance from previous prime (401664121) and next prime (401664139).

It is a super-2 number, since 2×401664130² = 322668146657313800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401664095 and 401664104.

It is not an unprimeable number, because it can be changed into a prime (401664139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10911 + ... + 30370.

It is an arithmetic number, because the mean of its divisors is an integer number (26007660).

Almost surely, 2^401664130 is an apocalyptic number.

401664130 is an abundant number, since it is smaller than the sum of its proper divisors (430580990).

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

401664130 is a wasteful number, since it uses less digits than its factorization.

401664130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41434.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 401664130 is about 20041.5600690166. The cubic root of 401664130 is about 737.8266705651.

The spelling of 401664130 in words is "four hundred one million, six hundred sixty-four thousand, one hundred thirty".