72148815 has 24 divisors (see below), whose sum is σ = 130497120. Its totient is φ = 36805824.

The previous prime is 72148801. The next prime is 72148831. The reversal of 72148815 is 51884127.

It is not a de Polignac number, because 72148815 - 2¹³ = 72140623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72148815.

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, 33820 + ... + 35889.

It is an arithmetic number, because the mean of its divisors is an integer number (5437380).

Almost surely, 2^72148815 is an apocalyptic number.

72148815 is a deficient number, since it is larger than the sum of its proper divisors (58348305).

72148815 is a wasteful number, since it uses less digits than its factorization.

72148815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69743 (or 69740 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 72148815 is about 8494.0458557745. The cubic root of 72148815 is about 416.3031855856.

The spelling of 72148815 in words is "seventy-two million, one hundred forty-eight thousand, eight hundred fifteen".