72113398 has 24 divisors (see below), whose sum is σ = 132456600. Its totient is φ = 29278368.

The previous prime is 72113359. The next prime is 72113411. The reversal of 72113398 is 89331127.

It is a super-2 number, since 2×72113398² = 10400684342212808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17503 + ... + 21226.

It is an arithmetic number, because the mean of its divisors is an integer number (5519025).

Almost surely, 2^72113398 is an apocalyptic number.

72113398 is a deficient number, since it is larger than the sum of its proper divisors (60343202).

72113398 is a wasteful number, since it uses less digits than its factorization.

72113398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38764 (or 38757 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 72113398 is about 8491.9607865322. The cubic root of 72113398 is about 416.2350549994.

It can be divided in two parts, 7211 and 3398, that added together give a square (10609 = 103²).

The spelling of 72113398 in words is "seventy-two million, one hundred thirteen thousand, three hundred ninety-eight".