72225400 has 48 divisors (see below), whose sum is σ = 180847800. Its totient is φ = 26666880.

The previous prime is 72225343. The next prime is 72225407. The reversal of 72225400 is 452227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72225407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11290 + ... + 16489.

Almost surely, 2^72225400 is an apocalyptic number.

It is an amenable number.

72225400 is an abundant number, since it is smaller than the sum of its proper divisors (108622400).

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

72225400 is a wasteful number, since it uses less digits than its factorization.

72225400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27808 (or 27799 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 72225400 is about 8498.5528179802. The cubic root of 72225400 is about 416.4504335810.

Adding to 72225400 its reverse (452227), we get a palindrome (72677627).

The spelling of 72225400 in words is "seventy-two million, two hundred twenty-five thousand, four hundred".