72237040 has 20 divisors (see below), whose sum is σ = 167951304. Its totient is φ = 28894784.

The previous prime is 72237013. The next prime is 72237079. The reversal of 72237040 is 4073227.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 72236996 and 72237014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451402 + ... + 451561.

Almost surely, 2^72237040 is an apocalyptic number.

It is an amenable number.

72237040 is an abundant number, since it is smaller than the sum of its proper divisors (95714264).

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

72237040 is a wasteful number, since it uses less digits than its factorization.

72237040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902976 (or 902970 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72237040 is about 8499.2376128686. The cubic root of 72237040 is about 416.4728043936.

The spelling of 72237040 in words is "seventy-two million, two hundred thirty-seven thousand, forty".