72295640 has 16 divisors (see below), whose sum is σ = 162665280. Its totient is φ = 28918240.

The previous prime is 72295621. The next prime is 72295649. The reversal of 72295640 is 4659227.

It is a self number, because there is not a number n which added to its sum of digits gives 72295640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72295649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903656 + ... + 903735.

It is an arithmetic number, because the mean of its divisors is an integer number (10166580).

Almost surely, 2^72295640 is an apocalyptic number.

It is an amenable number.

72295640 is an abundant number, since it is smaller than the sum of its proper divisors (90369640).

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

72295640 is a wasteful number, since it uses less digits than its factorization.

72295640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807402 (or 1807398 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 72295640 is about 8502.6842820371. The cubic root of 72295640 is about 416.5853907249.

The spelling of 72295640 in words is "seventy-two million, two hundred ninety-five thousand, six hundred forty".