72210234 has 32 divisors (see below), whose sum is σ = 147013056. Its totient is φ = 23642240.

The previous prime is 72210233. The next prime is 72210247. The reversal of 72210234 is 43201227.

It is a super-4 number, since 4×72210234⁴ (a number of 33 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72210234.

It is not an unprimeable number, because it can be changed into a prime (72210233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87544 + ... + 88364.

It is an arithmetic number, because the mean of its divisors is an integer number (4594158).

Almost surely, 2^72210234 is an apocalyptic number.

72210234 is an abundant number, since it is smaller than the sum of its proper divisors (74802822).

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

72210234 is a wasteful number, since it uses less digits than its factorization.

72210234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 72210234 is about 8497.6605015734. The cubic root of 72210234 is about 416.4212825741.

The spelling of 72210234 in words is "seventy-two million, two hundred ten thousand, two hundred thirty-four".