72818351 has 4 divisors (see below), whose sum is σ = 72836400. Its totient is φ = 72800304.

The previous prime is 72818341. The next prime is 72818353. The reversal of 72818351 is 15381827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15381827 = 593 ⋅25939.

It is a cyclic number.

It is not a de Polignac number, because 72818351 - 2²² = 68624047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72818353) 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, 110 + ... + 12068.

It is an arithmetic number, because the mean of its divisors is an integer number (18209100).

Almost surely, 2^72818351 is an apocalyptic number.

72818351 is a deficient number, since it is larger than the sum of its proper divisors (18049).

72818351 is a wasteful number, since it uses less digits than its factorization.

72818351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18048.

The product of its digits is 13440, while the sum is 35.

The square root of 72818351 is about 8533.3669205068. The cubic root of 72818351 is about 417.5869774684.

The spelling of 72818351 in words is "seventy-two million, eight hundred eighteen thousand, three hundred fifty-one".