72800740 has 12 divisors (see below), whose sum is σ = 152881596. Its totient is φ = 29120288.

The previous prime is 72800737. The next prime is 72800753. The reversal of 72800740 is 4700827.

It can be written as a sum of positive squares in 2 ways, for example, as 33663204 + 39137536 = 5802^2 + 6256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72800699 and 72800708.

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, 1819999 + ... + 1820038.

It is an arithmetic number, because the mean of its divisors is an integer number (12740133).

Almost surely, 2^72800740 is an apocalyptic number.

It is an amenable number.

72800740 is an abundant number, since it is smaller than the sum of its proper divisors (80080856).

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

72800740 is a wasteful number, since it uses less digits than its factorization.

72800740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640046 (or 3640044 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 72800740 is about 8532.3349676393. The cubic root of 72800740 is about 417.5533105100.

The spelling of 72800740 in words is "seventy-two million, eight hundred thousand, seven hundred forty".