72663542 has 32 divisors (see below), whose sum is σ = 133151040. Its totient is φ = 29030400.

The previous prime is 72663533. The next prime is 72663553. The reversal of 72663542 is 24536627.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24542 + ... + 27342.

It is an arithmetic number, because the mean of its divisors is an integer number (4160970).

Almost surely, 2^72663542 is an apocalyptic number.

72663542 is a deficient number, since it is larger than the sum of its proper divisors (60487498).

72663542 is a wasteful number, since it uses less digits than its factorization.

72663542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936.

The product of its digits is 60480, while the sum is 35.

The square root of 72663542 is about 8524.2912901895. The cubic root of 72663542 is about 417.2908429205.

The spelling of 72663542 in words is "seventy-two million, six hundred sixty-three thousand, five hundred forty-two".