72342292 has 12 divisors (see below), whose sum is σ = 138108096. Its totient is φ = 32882840.

The previous prime is 72342247. The next prime is 72342299. The reversal of 72342292 is 29224327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72342299) 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, 822028 + ... + 822115.

It is an arithmetic number, because the mean of its divisors is an integer number (11509008).

Almost surely, 2^72342292 is an apocalyptic number.

It is an amenable number.

72342292 is a deficient number, since it is larger than the sum of its proper divisors (65765804).

72342292 is a wasteful number, since it uses less digits than its factorization.

72342292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644158 (or 1644156 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 72342292 is about 8505.4272085534. The cubic root of 72342292 is about 416.6749782520.

The spelling of 72342292 in words is "seventy-two million, three hundred forty-two thousand, two hundred ninety-two".