72202987 has 4 divisors (see below), whose sum is σ = 72222480. Its totient is φ = 72183496.

The previous prime is 72202979. The next prime is 72202993. The reversal of 72202987 is 78920227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78920227 = 73 ⋅1081099.

It is a cyclic number.

It is not a de Polignac number, because 72202987 - 2³ = 72202979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72202967) 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, 2287 + ... + 12232.

It is an arithmetic number, because the mean of its divisors is an integer number (18055620).

Almost surely, 2^72202987 is an apocalyptic number.

72202987 is a deficient number, since it is larger than the sum of its proper divisors (19493).

72202987 is a wasteful number, since it uses less digits than its factorization.

72202987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19492.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 72202987 is about 8497.2340793931. The cubic root of 72202987 is about 416.4073514648.

The spelling of 72202987 in words is "seventy-two million, two hundred two thousand, nine hundred eighty-seven".