72347836 has 48 divisors (see below), whose sum is σ = 141668352. Its totient is φ = 32321520.

The previous prime is 72347797. The next prime is 72347867. The reversal of 72347836 is 63874327.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569605 + ... + 569731.

It is an arithmetic number, because the mean of its divisors is an integer number (2951424).

Almost surely, 2^72347836 is an apocalyptic number.

It is an amenable number.

72347836 is a deficient number, since it is larger than the sum of its proper divisors (69320516).

72347836 is a wasteful number, since it uses less digits than its factorization.

72347836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 247 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 72347836 is about 8505.7531118649. The cubic root of 72347836 is about 416.6856220354.

The spelling of 72347836 in words is "seventy-two million, three hundred forty-seven thousand, eight hundred thirty-six".