72197346 has 16 divisors (see below), whose sum is σ = 155502144. Its totient is φ = 22214544.

The previous prime is 72197339. The next prime is 72197347. The reversal of 72197346 is 64379127.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72197347) 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, 462726 + ... + 462881.

It is an arithmetic number, because the mean of its divisors is an integer number (9718884).

Almost surely, 2^72197346 is an apocalyptic number.

72197346 is an abundant number, since it is smaller than the sum of its proper divisors (83304798).

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

72197346 is a wasteful number, since it uses less digits than its factorization.

72197346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925625.

The product of its digits is 63504, while the sum is 39.

The square root of 72197346 is about 8496.9021413689. The cubic root of 72197346 is about 416.3965069686.

The spelling of 72197346 in words is "seventy-two million, one hundred ninety-seven thousand, three hundred forty-six".