72439502 has 16 divisors (see below), whose sum is σ = 111240000. Its totient is φ = 35363328.

The previous prime is 72439501. The next prime is 72439517. The reversal of 72439502 is 20593427.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72439501) 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, 57374 + ... + 58622.

It is an arithmetic number, because the mean of its divisors is an integer number (6952500).

Almost surely, 2^72439502 is an apocalyptic number.

72439502 is a deficient number, since it is larger than the sum of its proper divisors (38800498).

72439502 is a wasteful number, since it uses less digits than its factorization.

72439502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 72439502 is about 8511.1398766558. The cubic root of 72439502 is about 416.8615304710.

The spelling of 72439502 in words is "seventy-two million, four hundred thirty-nine thousand, five hundred two".