72499650 has 48 divisors (see below), whose sum is σ = 184672704. Its totient is φ = 18809280.

The previous prime is 72499631. The next prime is 72499663. The reversal of 72499650 is 5699427.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 982 + ... + 12081.

It is an arithmetic number, because the mean of its divisors is an integer number (3847348).

Almost surely, 2^72499650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72499650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92336352).

72499650 is an abundant number, since it is smaller than the sum of its proper divisors (112173054).

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

72499650 is a wasteful number, since it uses less digits than its factorization.

72499650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13115 (or 13110 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 72499650 is about 8514.6726302307. The cubic root of 72499650 is about 416.9768747707.

The spelling of 72499650 in words is "seventy-two million, four hundred ninety-nine thousand, six hundred fifty".