72349453 has 8 divisors (see below), whose sum is σ = 79070400. Its totient is φ = 65652480.

The previous prime is 72349447. The next prime is 72349469. The reversal of 72349453 is 35494327.

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 72349453 - 2²⁵ = 38795021 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 (72349423) 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, 648 + ... + 12046.

It is an arithmetic number, because the mean of its divisors is an integer number (9883800).

Almost surely, 2^72349453 is an apocalyptic number.

It is an amenable number.

72349453 is a deficient number, since it is larger than the sum of its proper divisors (6720947).

72349453 is a wasteful number, since it uses less digits than its factorization.

72349453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11987.

The product of its digits is 90720, while the sum is 37.

The square root of 72349453 is about 8505.8481646453. The cubic root of 72349453 is about 416.6887263698.

It can be divided in two parts, 723 and 49453, that added together give a square (50176 = 224²).

The spelling of 72349453 in words is "seventy-two million, three hundred forty-nine thousand, four hundred fifty-three".