72432655 has 16 divisors (see below), whose sum is σ = 92412000. Its totient is φ = 54345600.

The previous prime is 72432653. The next prime is 72432697. The reversal of 72432655 is 55623427.

It is not a de Polignac number, because 72432655 - 2¹ = 72432653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72432655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72432653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5821 + ... + 13369.

It is an arithmetic number, because the mean of its divisors is an integer number (5775750).

Almost surely, 2^72432655 is an apocalyptic number.

72432655 is a deficient number, since it is larger than the sum of its proper divisors (19979345).

72432655 is a wasteful number, since it uses less digits than its factorization.

72432655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674.

The product of its digits is 50400, while the sum is 34.

The square root of 72432655 is about 8510.7376296065. The cubic root of 72432655 is about 416.8483961048.

The spelling of 72432655 in words is "seventy-two million, four hundred thirty-two thousand, six hundred fifty-five".