72615078 has 24 divisors (see below), whose sum is σ = 157489488. Its totient is φ = 24180912.

The previous prime is 72615077. The next prime is 72615083. The reversal of 72615078 is 87051627.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72615077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33751 + ... + 35837.

It is an arithmetic number, because the mean of its divisors is an integer number (6562062).

Almost surely, 2^72615078 is an apocalyptic number.

72615078 is an abundant number, since it is smaller than the sum of its proper divisors (84874410).

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

72615078 is a wasteful number, since it uses less digits than its factorization.

72615078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028 (or 4025 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 72615078 is about 8521.4481163708. The cubic root of 72615078 is about 417.1980495670.

The spelling of 72615078 in words is "seventy-two million, six hundred fifteen thousand, seventy-eight".