72378299 has 16 divisors (see below), whose sum is σ = 88704000. Its totient is φ = 57642624.

The previous prime is 72378283. The next prime is 72378307. The reversal of 72378299 is 99287327.

It is a cyclic number.

It is not a de Polignac number, because 72378299 - 2⁴ = 72378283 is a prime.

It is a super-2 number, since 2×72378299² = 10477236332266802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72378499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5552 + ... + 13250.

It is an arithmetic number, because the mean of its divisors is an integer number (5544000).

Almost surely, 2^72378299 is an apocalyptic number.

72378299 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

72378299 is a deficient number, since it is larger than the sum of its proper divisors (16325701).

72378299 is a wasteful number, since it uses less digits than its factorization.

72378299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802.

The product of its digits is 381024, while the sum is 47.

The square root of 72378299 is about 8507.5436525474. The cubic root of 72378299 is about 416.7440974676.

The spelling of 72378299 in words is "seventy-two million, three hundred seventy-eight thousand, two hundred ninety-nine".