400767216 has 40 divisors (see below), whose sum is σ = 1045004544. Its totient is φ = 132338880.

The previous prime is 400767193. The next prime is 400767221. The reversal of 400767216 is 612767004.

It is a super-2 number, since 2×400767216² = 321228722840781312, which contains 22 as substring.

It is a congruent number.

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, 33880 + ... + 44151.

Almost surely, 2^400767216 is an apocalyptic number.

It is an amenable number.

400767216 is an abundant number, since it is smaller than the sum of its proper divisors (644237328).

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

400767216 is a wasteful number, since it uses less digits than its factorization.

400767216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78149 (or 78143 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 400767216 is about 20019.1712116161. The cubic root of 400767216 is about 737.2770735203.

The spelling of 400767216 in words is "four hundred million, seven hundred sixty-seven thousand, two hundred sixteen".