72236500 has 48 divisors (see below), whose sum is σ = 180311040. Its totient is φ = 24765600.

The previous prime is 72236497. The next prime is 72236501. The reversal of 72236500 is 563227.

It is a super-2 number, since 2×72236500² = 10436223864500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72236501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6820 + ... + 13819.

It is an arithmetic number, because the mean of its divisors is an integer number (3756480).

Almost surely, 2^72236500 is an apocalyptic number.

72236500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72236500 is an abundant number, since it is smaller than the sum of its proper divisors (108074540).

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

72236500 is a wasteful number, since it uses less digits than its factorization.

72236500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20665 (or 20653 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 72236500 is about 8499.2058452540. The cubic root of 72236500 is about 416.4717666255.

Adding to 72236500 its reverse (563227), we get a palindrome (72799727).

The spelling of 72236500 in words is "seventy-two million, two hundred thirty-six thousand, five hundred".