72700380 has 72 divisors (see below), whose sum is σ = 225926064. Its totient is φ = 18912000.

The previous prime is 72700373. The next prime is 72700409. The reversal of 72700380 is 8300727.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2455 + ... + 12305.

It is an arithmetic number, because the mean of its divisors is an integer number (3137862).

Almost surely, 2^72700380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72700380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112963032).

72700380 is an abundant number, since it is smaller than the sum of its proper divisors (153225684).

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

72700380 is a wasteful number, since it uses less digits than its factorization.

72700380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907 (or 9902 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 72700380 is about 8526.4517825412. The cubic root of 72700380 is about 417.3613485352.

The spelling of 72700380 in words is "seventy-two million, seven hundred thousand, three hundred eighty".