400023524 has 24 divisors (see below), whose sum is σ = 706503168. Its totient is φ = 198174560.

The previous prime is 400023517. The next prime is 400023527. The reversal of 400023524 is 425320004.

It is a junction number, because it is equal to n+sod(n) for n = 400023496 and 400023505.

It is not an unprimeable number, because it can be changed into a prime (400023527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222959 + ... + 224745.

It is an arithmetic number, because the mean of its divisors is an integer number (29437632).

Almost surely, 2^400023524 is an apocalyptic number.

It is an amenable number.

400023524 is a deficient number, since it is larger than the sum of its proper divisors (306479644).

400023524 is a wasteful number, since it uses less digits than its factorization.

400023524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275 (or 2273 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 400023524 is about 20000.5880913537. The cubic root of 400023524 is about 736.8207433044.

Adding to 400023524 its reverse (425320004), we get a palindrome (825343528).

The spelling of 400023524 in words is "four hundred million, twenty-three thousand, five hundred twenty-four".