72299895 has 32 divisors (see below), whose sum is σ = 123042240. Its totient is φ = 36126720.

The previous prime is 72299891. The next prime is 72299911. The reversal of 72299895 is 59899227.

It is not a de Polignac number, because 72299895 - 2² = 72299891 is a prime.

It is a super-2 number, since 2×72299895² = 10454549634022050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72299891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71151 + ... + 72159.

It is an arithmetic number, because the mean of its divisors is an integer number (3845070).

Almost surely, 2^72299895 is an apocalyptic number.

72299895 is a deficient number, since it is larger than the sum of its proper divisors (50742345).

72299895 is a wasteful number, since it uses less digits than its factorization.

72299895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its digits is 816480, while the sum is 51.

The square root of 72299895 is about 8502.9344934558. The cubic root of 72299895 is about 416.5935633527.

The spelling of 72299895 in words is "seventy-two million, two hundred ninety-nine thousand, eight hundred ninety-five".