10400512 has 18 divisors (see below), whose sum is σ = 20760908. Its totient is φ = 5200128.

The previous prime is 10400501. The next prime is 10400513. The reversal of 10400512 is 21500401.

It is a junction number, because it is equal to n+sod(n) for n = 10400492 and 10400501.

It is not an unprimeable number, because it can be changed into a prime (10400513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20058 + ... + 20569.

Almost surely, 2^10400512 is an apocalyptic number.

It is an amenable number.

10400512 is a deficient number, since it is larger than the sum of its proper divisors (10360396).

10400512 is an frugal number, since it uses more digits than its factorization.

10400512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40643 (or 40629 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 10400512 is about 3224.9824805726. The cubic root of 10400512 is about 218.2821585609.

Adding to 10400512 its reverse (21500401), we get a palindrome (31900913).

The spelling of 10400512 in words is "ten million, four hundred thousand, five hundred twelve".