72494487 has 32 divisors (see below), whose sum is σ = 116276160. Its totient is φ = 44375040.

The previous prime is 72494453. The next prime is 72494491. The reversal of 72494487 is 78449427.

It is not a de Polignac number, because 72494487 - 2⁸ = 72494231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72494497) 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 31 ways as a sum of consecutive naturals, for example, 84163 + ... + 85019.

It is an arithmetic number, because the mean of its divisors is an integer number (3633630).

Almost surely, 2^72494487 is an apocalyptic number.

72494487 is a deficient number, since it is larger than the sum of its proper divisors (43781673).

72494487 is a wasteful number, since it uses less digits than its factorization.

72494487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1114 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 72494487 is about 8514.3694423016. The cubic root of 72494487 is about 416.9669763196.

The spelling of 72494487 in words is "seventy-two million, four hundred ninety-four thousand, four hundred eighty-seven".