400888048 has 40 divisors (see below), whose sum is σ = 855146160. Its totient is φ = 180541440.

The previous prime is 400888013. The next prime is 400888057. The reversal of 400888048 is 840888004.

It is a super-2 number, since 2×400888048² = 321422454058500608, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 400888048.

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, 8736 + ... + 29632.

It is an arithmetic number, because the mean of its divisors is an integer number (21378654).

Almost surely, 2^400888048 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 400888048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427573080).

400888048 is an abundant number, since it is smaller than the sum of its proper divisors (454258112).

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

400888048 is a wasteful number, since it uses less digits than its factorization.

400888048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21025 (or 21019 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The square root of 400888048 is about 20022.1888913275. The cubic root of 400888048 is about 737.3511628403.

The spelling of 400888048 in words is "four hundred million, eight hundred eighty-eight thousand, forty-eight".