72212190 has 16 divisors (see below), whose sum is σ = 173309328. Its totient is φ = 19256576.

The previous prime is 72212171. The next prime is 72212191. The reversal of 72212190 is 9121227.

It is a super-2 number, since 2×72212190² = 10429200769192200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72212190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72212191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1203507 + ... + 1203566.

It is an arithmetic number, because the mean of its divisors is an integer number (10831833).

Almost surely, 2^72212190 is an apocalyptic number.

72212190 is an abundant number, since it is smaller than the sum of its proper divisors (101097138).

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

72212190 is a wasteful number, since it uses less digits than its factorization.

72212190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407083.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 72212190 is about 8497.7755912945. The cubic root of 72212190 is about 416.4250424875.

The spelling of 72212190 in words is "seventy-two million, two hundred twelve thousand, one hundred ninety".