73909072 has 20 divisors (see below), whose sum is σ = 143339040. Its totient is φ = 36918368.

The previous prime is 73909067. The next prime is 73909079. The reversal of 73909072 is 27090937.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73909079) 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, 23463 + ... + 26425.

It is an arithmetic number, because the mean of its divisors is an integer number (7166952).

Almost surely, 2^73909072 is an apocalyptic number.

It is an amenable number.

73909072 is a deficient number, since it is larger than the sum of its proper divisors (69429968).

73909072 is a wasteful number, since it uses less digits than its factorization.

73909072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530 (or 4524 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 73909072 is about 8597.0385598763. The cubic root of 73909072 is about 419.6616170918.

The spelling of 73909072 in words is "seventy-three million, nine hundred nine thousand, seventy-two".