538400512 has 36 divisors (see below), whose sum is σ = 1157374120. Its totient is φ = 248491008.

The previous prime is 538400503. The next prime is 538400519. The reversal of 538400512 is 215004835.

It is a super-2 number, since 2×538400512² = 579750222643724288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538400519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77562 + ... + 84217.

Almost surely, 2^538400512 is an apocalyptic number.

538400512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

538400512 is an abundant number, since it is smaller than the sum of its proper divisors (618973608).

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

538400512 is a wasteful number, since it uses less digits than its factorization.

538400512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161808 (or 161794 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 538400512 is about 23203.4590524775. The cubic root of 538400512 is about 813.5204753159.

The spelling of 538400512 in words is "five hundred thirty-eight million, four hundred thousand, five hundred twelve".