400352424 has 32 divisors (see below), whose sum is σ = 1035396000. Its totient is φ = 128848832.

The previous prime is 400352417. The next prime is 400352437. The reversal of 400352424 is 424253004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 400352394 and 400352403.

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, 286914 + ... + 288305.

It is an arithmetic number, because the mean of its divisors is an integer number (32356125).

Almost surely, 2^400352424 is an apocalyptic number.

It is an amenable number.

400352424 is an abundant number, since it is smaller than the sum of its proper divisors (635043576).

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

400352424 is a wasteful number, since it uses less digits than its factorization.

400352424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575257 (or 575253 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 400352424 is about 20008.8086601876. The cubic root of 400352424 is about 737.0226263944.

The spelling of 400352424 in words is "four hundred million, three hundred fifty-two thousand, four hundred twenty-four".