73472072 has 8 divisors (see below), whose sum is σ = 137760150. Its totient is φ = 36736032.

The previous prime is 73472071. The next prime is 73472089. The reversal of 73472072 is 27027437.

It can be written as a sum of positive squares in only one way, i.e., 70324996 + 3147076 = 8386^2 + 1774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (73472071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4591997 + ... + 4592012.

Almost surely, 2^73472072 is an apocalyptic number.

It is an amenable number.

73472072 is a deficient number, since it is larger than the sum of its proper divisors (64288078).

73472072 is a wasteful number, since it uses less digits than its factorization.

73472072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9184015 (or 9184011 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 73472072 is about 8571.5851509508. The cubic root of 73472072 is about 418.8328746049.

The spelling of 73472072 in words is "seventy-three million, four hundred seventy-two thousand, seventy-two".