72273708 has 60 divisors (see below), whose sum is σ = 203483280. Its totient is φ = 22236768.

The previous prime is 72273697. The next prime is 72273709. The reversal of 72273708 is 80737227.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72273709) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4368 + ... + 12791.

It is an arithmetic number, because the mean of its divisors is an integer number (3391388).

Almost surely, 2^72273708 is an apocalyptic number.

72273708 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

72273708 is an abundant number, since it is smaller than the sum of its proper divisors (131209572).

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

72273708 is a wasteful number, since it uses less digits than its factorization.

72273708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17188 (or 17177 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 72273708 is about 8501.3944738496. The cubic root of 72273708 is about 416.5432605916.

The spelling of 72273708 in words is "seventy-two million, two hundred seventy-three thousand, seven hundred eight".