72209346 has 16 divisors (see below), whose sum is σ = 157547808. Its totient is φ = 21881600.

The previous prime is 72209321. The next prime is 72209363. The reversal of 72209346 is 64390227.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 546975 + ... + 547106.

It is an arithmetic number, because the mean of its divisors is an integer number (9846738).

Almost surely, 2^72209346 is an apocalyptic number.

72209346 is an abundant number, since it is smaller than the sum of its proper divisors (85338462).

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

72209346 is a wasteful number, since it uses less digits than its factorization.

72209346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094097.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 72209346 is about 8497.6082517377. The cubic root of 72209346 is about 416.4195755972.

The spelling of 72209346 in words is "seventy-two million, two hundred nine thousand, three hundred forty-six".