72409852 has 6 divisors (see below), whose sum is σ = 126717248. Its totient is φ = 36204924.

The previous prime is 72409823. The next prime is 72409853. The reversal of 72409852 is 25890427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72409853) 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 as a sum of consecutive naturals, namely, 9051228 + ... + 9051235.

Almost surely, 2^72409852 is an apocalyptic number.

It is an amenable number.

72409852 is a deficient number, since it is larger than the sum of its proper divisors (54307396).

72409852 is a wasteful number, since it uses less digits than its factorization.

72409852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18102467 (or 18102465 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 72409852 is about 8509.3978635389. The cubic root of 72409852 is about 416.8046479196.

The spelling of 72409852 in words is "seventy-two million, four hundred nine thousand, eight hundred fifty-two".