72100470 has 48 divisors (see below), whose sum is σ = 187389072. Its totient is φ = 17746560.

The previous prime is 72100411. The next prime is 72100481. The reversal of 72100470 is 7400127.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2041 + ... + 12180.

It is an arithmetic number, because the mean of its divisors is an integer number (3903939).

Almost surely, 2^72100470 is an apocalyptic number.

72100470 is an abundant number, since it is smaller than the sum of its proper divisors (115288602).

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

72100470 is a wasteful number, since it uses less digits than its factorization.

72100470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14257 (or 14244 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 72100470 is about 8491.1995618994. The cubic root of 72100470 is about 416.2101802488.

Adding to 72100470 its reverse (7400127), we get a palindrome (79500597).

The spelling of 72100470 in words is "seventy-two million, one hundred thousand, four hundred seventy".