72150690 has 32 divisors (see below), whose sum is σ = 173416320. Its totient is φ = 19211904.

The previous prime is 72150667. The next prime is 72150691. The reversal of 72150690 is 9605127.

It is a super-2 number, since 2×72150690² = 10411444134952200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (72150691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26262 + ... + 28878.

It is an arithmetic number, because the mean of its divisors is an integer number (5419260).

Almost surely, 2^72150690 is an apocalyptic number.

72150690 is an abundant number, since it is smaller than the sum of its proper divisors (101265630).

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

72150690 is a wasteful number, since it uses less digits than its factorization.

72150690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 72150690 is about 8494.1562264889. The cubic root of 72150690 is about 416.3067918435.

The spelling of 72150690 in words is "seventy-two million, one hundred fifty thousand, six hundred ninety".