400245524 has 36 divisors (see below), whose sum is σ = 816641280. Its totient is φ = 171143280.

The previous prime is 400245511. The next prime is 400245551. The reversal of 400245524 is 425542004.

It is a junction number, because it is equal to n+sod(n) for n = 400245493 and 400245502.

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, 94157 + ... + 98315.

It is an arithmetic number, because the mean of its divisors is an integer number (22684480).

Almost surely, 2^400245524 is an apocalyptic number.

It is an amenable number.

400245524 is an abundant number, since it is smaller than the sum of its proper divisors (416395756).

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

400245524 is a wasteful number, since it uses less digits than its factorization.

400245524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668 (or 4659 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 400245524 is about 20006.1371583822. The cubic root of 400245524 is about 736.9570219190.

Adding to 400245524 its reverse (425542004), we get a palindrome (825787528).

The spelling of 400245524 in words is "four hundred million, two hundred forty-five thousand, five hundred twenty-four".