72242536 has 16 divisors (see below), whose sum is σ = 137088000. Its totient is φ = 35685744.

The previous prime is 72242531. The next prime is 72242539. The reversal of 72242536 is 63524227.

It is a super-2 number, since 2×72242536² = 10437968015422592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72242498 and 72242507.

It is not an unprimeable number, because it can be changed into a prime (72242531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53736 + ... + 55063.

It is an arithmetic number, because the mean of its divisors is an integer number (8568000).

Almost surely, 2^72242536 is an apocalyptic number.

It is an amenable number.

72242536 is a deficient number, since it is larger than the sum of its proper divisors (64845464).

72242536 is a wasteful number, since it uses less digits than its factorization.

72242536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108888 (or 108884 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 72242536 is about 8499.5609298363. The cubic root of 72242536 is about 416.4833662719.

The spelling of 72242536 in words is "seventy-two million, two hundred forty-two thousand, five hundred thirty-six".