72531867 has 8 divisors (see below), whose sum is σ = 98294800. Its totient is φ = 47561760.

The previous prime is 72531863. The next prime is 72531869. The reversal of 72531867 is 76813527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72531867 - 2² = 72531863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72531863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197992 + ... + 198357.

It is an arithmetic number, because the mean of its divisors is an integer number (12286850).

Almost surely, 2^72531867 is an apocalyptic number.

72531867 is a deficient number, since it is larger than the sum of its proper divisors (25762933).

72531867 is a wasteful number, since it uses less digits than its factorization.

72531867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396413.

The product of its digits is 70560, while the sum is 39.

The square root of 72531867 is about 8516.5642720524. The cubic root of 72531867 is about 417.0386302624.

The spelling of 72531867 in words is "seventy-two million, five hundred thirty-one thousand, eight hundred sixty-seven".