72033690 has 32 divisors (see below), whose sum is σ = 175815360. Its totient is φ = 18882944.

The previous prime is 72033673. The next prime is 72033713. The reversal of 72033690 is 9633027.

It is a happy number.

It is a super-2 number, since 2×72033690² = 10377704990032200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18579 + ... + 22118.

It is an arithmetic number, because the mean of its divisors is an integer number (5494230).

Almost surely, 2^72033690 is an apocalyptic number.

72033690 is an abundant number, since it is smaller than the sum of its proper divisors (103781670).

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

72033690 is a wasteful number, since it uses less digits than its factorization.

72033690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40766.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 72033690 is about 8487.2663443538. The cubic root of 72033690 is about 416.0816415517.

The spelling of 72033690 in words is "seventy-two million, thirty-three thousand, six hundred ninety".