72009910 has 48 divisors (see below), whose sum is σ = 151806960. Its totient is φ = 24521280.

The previous prime is 72009877. The next prime is 72009953. The reversal of 72009910 is 1990027.

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, 87300 + ... + 88120.

It is an arithmetic number, because the mean of its divisors is an integer number (3162645).

Almost surely, 2^72009910 is an apocalyptic number.

72009910 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72009910 is an abundant number, since it is smaller than the sum of its proper divisors (79797050).

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

72009910 is a wasteful number, since it uses less digits than its factorization.

72009910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 72009910 is about 8485.8653064964. The cubic root of 72009910 is about 416.0358504298.

Adding to 72009910 its reverse (1990027), we get a palindrome (73999937).

The spelling of 72009910 in words is "seventy-two million, nine thousand, nine hundred ten".