72165214 has 16 divisors (see below), whose sum is σ = 123223680. Its totient is φ = 31375960.

The previous prime is 72165131. The next prime is 72165229. The reversal of 72165214 is 41256127.

It is a super-2 number, since 2×72165214² = 10415636223331592, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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, 70804 + ... + 71815.

It is an arithmetic number, because the mean of its divisors is an integer number (7701480).

Almost surely, 2^72165214 is an apocalyptic number.

72165214 is a deficient number, since it is larger than the sum of its proper divisors (51058466).

72165214 is a wasteful number, since it uses less digits than its factorization.

72165214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142655.

The product of its digits is 3360, while the sum is 28.

The square root of 72165214 is about 8495.0111241834. The cubic root of 72165214 is about 416.3347242822.

The spelling of 72165214 in words is "seventy-two million, one hundred sixty-five thousand, two hundred fourteen".