72951489 has 32 divisors (see below), whose sum is σ = 116941440. Its totient is φ = 44680896.

The previous prime is 72951481. The next prime is 72951511. The reversal of 72951489 is 98415927.

It is not a de Polignac number, because 72951489 - 2³ = 72951481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72951481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107419 + ... + 108095.

It is an arithmetic number, because the mean of its divisors is an integer number (3654420).

Almost surely, 2^72951489 is an apocalyptic number.

It is an amenable number.

72951489 is a deficient number, since it is larger than the sum of its proper divisors (43989951).

72951489 is a wasteful number, since it uses less digits than its factorization.

72951489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 72951489 is about 8541.1643819798. The cubic root of 72951489 is about 417.8413219895.

The spelling of 72951489 in words is "seventy-two million, nine hundred fifty-one thousand, four hundred eighty-nine".