72415650 has 48 divisors (see below), whose sum is σ = 189050400. Its totient is φ = 18293760.

The previous prime is 72415633. The next prime is 72415657. The reversal of 72415650 is 5651427.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72415657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9855 + ... + 15554.

It is an arithmetic number, because the mean of its divisors is an integer number (3938550).

Almost surely, 2^72415650 is an apocalyptic number.

72415650 is an abundant number, since it is smaller than the sum of its proper divisors (116634750).

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

72415650 is a wasteful number, since it uses less digits than its factorization.

72415650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25443 (or 25438 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 72415650 is about 8509.7385388742. The cubic root of 72415650 is about 416.8157724134.

It can be divided in two parts, 724156 and 50, that added together give a triangular number (724206 = T₁₂₀₃).

The spelling of 72415650 in words is "seventy-two million, four hundred fifteen thousand, six hundred fifty".