72402198 has 32 divisors (see below), whose sum is σ = 166285440. Its totient is φ = 20784960.

The previous prime is 72402193. The next prime is 72402223. The reversal of 72402198 is 89120427.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72402193) 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, 27615 + ... + 30122.

It is an arithmetic number, because the mean of its divisors is an integer number (5196420).

Almost surely, 2^72402198 is an apocalyptic number.

72402198 is an abundant number, since it is smaller than the sum of its proper divisors (93883242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72402198 is a wasteful number, since it uses less digits than its factorization.

72402198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57772.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 72402198 is about 8508.9481136037. The cubic root of 72402198 is about 416.7899614503.

The spelling of 72402198 in words is "seventy-two million, four hundred two thousand, one hundred ninety-eight".