400231296 has 96 divisors (see below), whose sum is σ = 1156961520. Its totient is φ = 132802560.

The previous prime is 400231277. The next prime is 400231319. The reversal of 400231296 is 692132004.

400231296 is a `hidden beast` number, since 400 + 231 + 29 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×400231296³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 302316 + ... + 303636.

Almost surely, 2^400231296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400231296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578480760).

400231296 is an abundant number, since it is smaller than the sum of its proper divisors (756730224).

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

400231296 is a wasteful number, since it uses less digits than its factorization.

400231296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 400231296 is about 20005.7815643378. The cubic root of 400231296 is about 736.9482893218.

The spelling of 400231296 in words is "four hundred million, two hundred thirty-one thousand, two hundred ninety-six".