72998245 has 16 divisors (see below), whose sum is σ = 90765360. Its totient is φ = 56320000.

The previous prime is 72998243. The next prime is 72998257. The reversal of 72998245 is 54289927.

It can be written as a sum of positive squares in 8 ways, for example, as 38353249 + 34644996 = 6193^2 + 5886^2 .

It is not a de Polignac number, because 72998245 - 2¹ = 72998243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72998195 and 72998204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72998243) 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, 16245 + ... + 20245.

It is an arithmetic number, because the mean of its divisors is an integer number (5672835).

Almost surely, 2^72998245 is an apocalyptic number.

It is an amenable number.

72998245 is a deficient number, since it is larger than the sum of its proper divisors (17767115).

72998245 is a wasteful number, since it uses less digits than its factorization.

72998245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136.

The product of its digits is 362880, while the sum is 46.

The square root of 72998245 is about 8543.9010410936. The cubic root of 72998245 is about 417.9305704148.

The spelling of 72998245 in words is "seventy-two million, nine hundred ninety-eight thousand, two hundred forty-five".