72162867 has 8 divisors (see below), whose sum is σ = 109962496. Its totient is φ = 41235912.

The previous prime is 72162863. The next prime is 72162887. The reversal of 72162867 is 76826127.

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

It is not a de Polignac number, because 72162867 - 2² = 72162863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72162863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1718143 + ... + 1718184.

It is an arithmetic number, because the mean of its divisors is an integer number (13745312).

Almost surely, 2^72162867 is an apocalyptic number.

72162867 is a deficient number, since it is larger than the sum of its proper divisors (37799629).

72162867 is a wasteful number, since it uses less digits than its factorization.

72162867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436337.

The product of its digits is 56448, while the sum is 39.

The square root of 72162867 is about 8494.8729831587. The cubic root of 72162867 is about 416.3302108048.

The spelling of 72162867 in words is "seventy-two million, one hundred sixty-two thousand, eight hundred sixty-seven".