72273442 has 8 divisors (see below), whose sum is σ = 108842832. Its totient is φ = 35992500.

The previous prime is 72273403. The next prime is 72273457. The reversal of 72273442 is 24437227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71484 + ... + 72487.

It is an arithmetic number, because the mean of its divisors is an integer number (13605354).

Almost surely, 2^72273442 is an apocalyptic number.

72273442 is a deficient number, since it is larger than the sum of its proper divisors (36569390).

72273442 is a wasteful number, since it uses less digits than its factorization.

72273442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144224.

The product of its digits is 18816, while the sum is 31.

The square root of 72273442 is about 8501.3788293429. The cubic root of 72273442 is about 416.5427495684.

The spelling of 72273442 in words is "seventy-two million, two hundred seventy-three thousand, four hundred forty-two".