72994145 has 16 divisors (see below), whose sum is σ = 102549888. Its totient is φ = 48831360.

The previous prime is 72994127. The next prime is 72994147. The reversal of 72994145 is 54149927.

It is not a de Polignac number, because 72994145 - 2⁸ = 72993889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (72994147) 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 in 15 ways as a sum of consecutive naturals, for example, 23999 + ... + 26868.

It is an arithmetic number, because the mean of its divisors is an integer number (6409368).

Almost surely, 2^72994145 is an apocalyptic number.

It is an amenable number.

72994145 is a deficient number, since it is larger than the sum of its proper divisors (29555743).

72994145 is a wasteful number, since it uses less digits than its factorization.

72994145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50920.

The product of its digits is 90720, while the sum is 41.

The square root of 72994145 is about 8543.6611004885. The cubic root of 72994145 is about 417.9227458092.

The spelling of 72994145 in words is "seventy-two million, nine hundred ninety-four thousand, one hundred forty-five".