72898091 has 8 divisors (see below), whose sum is σ = 88212960. Its totient is φ = 58808448.

The previous prime is 72898087. The next prime is 72898093. The reversal of 72898091 is 19089827.

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

It is a cyclic number.

It is not a de Polignac number, because 72898091 - 2² = 72898087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72898093) 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, 306176 + ... + 306413.

It is an arithmetic number, because the mean of its divisors is an integer number (11026620).

Almost surely, 2^72898091 is an apocalyptic number.

72898091 is a deficient number, since it is larger than the sum of its proper divisors (15314869).

72898091 is a wasteful number, since it uses less digits than its factorization.

72898091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612613.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 72898091 is about 8538.0378893514. The cubic root of 72898091 is about 417.7393485764.

The spelling of 72898091 in words is "seventy-two million, eight hundred ninety-eight thousand, ninety-one".