400075572 has 48 divisors (see below), whose sum is σ = 1013044032. Its totient is φ = 122154240.

The previous prime is 400075549. The next prime is 400075583. The reversal of 400075572 is 275570004.

It is a super-2 number, since 2×400075572² = 320120926622254368, 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 15 ways as a sum of consecutive naturals, for example, 10648 + ... + 30224.

It is an arithmetic number, because the mean of its divisors is an integer number (21105084).

Almost surely, 2^400075572 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 400075572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506522016).

400075572 is an abundant number, since it is smaller than the sum of its proper divisors (612968460).

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

400075572 is a wasteful number, since it uses less digits than its factorization.

400075572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19728 (or 19726 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 400075572 is about 20001.8892107721. The cubic root of 400075572 is about 736.8526984109.

The spelling of 400075572 in words is "four hundred million, seventy-five thousand, five hundred seventy-two".