72473272 has 32 divisors (see below), whose sum is σ = 138134880. Its totient is φ = 35642880.

The previous prime is 72473267. The next prime is 72473273. The reversal of 72473272 is 27237427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72473273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231388 + ... + 231700.

It is an arithmetic number, because the mean of its divisors is an integer number (4316715).

Almost surely, 2^72473272 is an apocalyptic number.

It is an amenable number.

72473272 is a deficient number, since it is larger than the sum of its proper divisors (65661608).

72473272 is a wasteful number, since it uses less digits than its factorization.

72473272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 699 counting only the distinct ones).

The product of its digits is 32928, while the sum is 34.

The square root of 72473272 is about 8513.1235160780. The cubic root of 72473272 is about 416.9262982037.

It can be divided in two parts, 72 and 473272, that added together give a square (473344 = 688²).

The spelling of 72473272 in words is "seventy-two million, four hundred seventy-three thousand, two hundred seventy-two".