50400012 has 24 divisors (see below), whose sum is σ = 126646576. Its totient is φ = 15507648.

The previous prime is 50400001. The next prime is 50400037. The reversal of 50400012 is 21000405.

It is a super-2 number, since 2×50400012² = 5080322419200288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 161383 + ... + 161694.

Almost surely, 2^50400012 is an apocalyptic number.

50400012 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

50400012 is an abundant number, since it is smaller than the sum of its proper divisors (76246564).

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

50400012 is a wasteful number, since it uses less digits than its factorization.

50400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323097 (or 323095 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 50400012 is about 7099.2965848737. The cubic root of 50400012 is about 369.3829794057.

Adding to 50400012 its reverse (21000405), we get a palindrome (71400417).

The spelling of 50400012 in words is "fifty million, four hundred thousand, twelve".