72169410 has 32 divisors (see below), whose sum is σ = 182324160. Its totient is φ = 18232128.

The previous prime is 72169397. The next prime is 72169417. The reversal of 72169410 is 1496127.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72169417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62737 + ... + 63876.

It is an arithmetic number, because the mean of its divisors is an integer number (5697630).

Almost surely, 2^72169410 is an apocalyptic number.

72169410 is an abundant number, since it is smaller than the sum of its proper divisors (110154750).

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

72169410 is a wasteful number, since it uses less digits than its factorization.

72169410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126642.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 72169410 is about 8495.2580890753. The cubic root of 72169410 is about 416.3427932975.

The spelling of 72169410 in words is "seventy-two million, one hundred sixty-nine thousand, four hundred ten".