400168620 has 48 divisors (see below), whose sum is σ = 1244970720. Its totient is φ = 106711488.

The previous prime is 400168619. The next prime is 400168631. The reversal of 400168620 is 26861004.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369987 + ... + 371066.

It is an arithmetic number, because the mean of its divisors is an integer number (25936890).

Almost surely, 2^400168620 is an apocalyptic number.

It is an amenable number.

400168620 is an abundant number, since it is smaller than the sum of its proper divisors (844802100).

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

400168620 is a wasteful number, since it uses less digits than its factorization.

400168620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741071 (or 741063 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 400168620 is about 20004.2150558326. The cubic root of 400168620 is about 736.9098187485.

The spelling of 400168620 in words is "four hundred million, one hundred sixty-eight thousand, six hundred twenty".