72273372 has 12 divisors (see below), whose sum is σ = 168637896. Its totient is φ = 24091120.

The previous prime is 72273371. The next prime is 72273373. The reversal of 72273372 is 27337227.

It is an interprime number because it is at equal distance from previous prime (72273371) and next prime (72273373).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72273371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3011379 + ... + 3011402.

It is an arithmetic number, because the mean of its divisors is an integer number (14053158).

Almost surely, 2^72273372 is an apocalyptic number.

It is an amenable number.

72273372 is an abundant number, since it is smaller than the sum of its proper divisors (96364524).

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

72273372 is a wasteful number, since it uses less digits than its factorization.

72273372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6022788 (or 6022786 counting only the distinct ones).

The product of its digits is 24696, while the sum is 33.

The square root of 72273372 is about 8501.3747123627. The cubic root of 72273372 is about 416.5426150883.

The spelling of 72273372 in words is "seventy-two million, two hundred seventy-three thousand, three hundred seventy-two".