72349644 has 24 divisors (see below), whose sum is σ = 177701440. Its totient is φ = 22847184.

The previous prime is 72349631. The next prime is 72349657. The reversal of 72349644 is 44694327.

It is an interprime number because it is at equal distance from previous prime (72349631) and next prime (72349657).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158434 + ... + 158889.

Almost surely, 2^72349644 is an apocalyptic number.

It is an amenable number.

72349644 is an abundant number, since it is smaller than the sum of its proper divisors (105351796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72349644 is a wasteful number, since it uses less digits than its factorization.

72349644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317349 (or 317347 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 72349644 is about 8505.8593922072. The cubic root of 72349644 is about 416.6890930507.

The spelling of 72349644 in words is "seventy-two million, three hundred forty-nine thousand, six hundred forty-four".