72020587 has 16 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 68676192.

The previous prime is 72020579. The next prime is 72020603. The reversal of 72020587 is 78502027.

It is a cyclic number.

It is not a de Polignac number, because 72020587 - 2³ = 72020579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72020087) 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, 431178 + ... + 431344.

It is an arithmetic number, because the mean of its divisors is an integer number (4717440).

Almost surely, 2^72020587 is an apocalyptic number.

72020587 is a deficient number, since it is larger than the sum of its proper divisors (3458453).

72020587 is a wasteful number, since it uses less digits than its factorization.

72020587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 72020587 is about 8486.4943881440. The cubic root of 72020587 is about 416.0564114667.

The spelling of 72020587 in words is "seventy-two million, twenty thousand, five hundred eighty-seven".