73638012 has 24 divisors (see below), whose sum is σ = 196368256. Its totient is φ = 21039408.

The previous prime is 73638011. The next prime is 73638023. The reversal of 73638012 is 21083637.

It is a super-2 number, since 2×73638012² = 10845113622624288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73638011) 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, 438238 + ... + 438405.

Almost surely, 2^73638012 is an apocalyptic number.

It is an amenable number.

73638012 is an abundant number, since it is smaller than the sum of its proper divisors (122730244).

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

73638012 is a wasteful number, since it uses less digits than its factorization.

73638012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876657 (or 876655 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 73638012 is about 8581.2593481377. The cubic root of 73638012 is about 419.1479551839.

The spelling of 73638012 in words is "seventy-three million, six hundred thirty-eight thousand, twelve".