72437436 has 48 divisors (see below), whose sum is σ = 188356000. Its totient is φ = 24074496.

The previous prime is 72437429. The next prime is 72437437. The reversal of 72437436 is 63473427.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 72437436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72437437) 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, 45990 + ... + 47538.

Almost surely, 2^72437436 is an apocalyptic number.

It is an amenable number.

72437436 is an abundant number, since it is smaller than the sum of its proper divisors (115918564).

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

72437436 is a wasteful number, since it uses less digits than its factorization.

72437436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995 (or 1987 counting only the distinct ones).

The product of its digits is 84672, while the sum is 36.

The square root of 72437436 is about 8511.0185054434. The cubic root of 72437436 is about 416.8575674210.

The spelling of 72437436 in words is "seventy-two million, four hundred thirty-seven thousand, four hundred thirty-six".