72563860 has 12 divisors (see below), whose sum is σ = 152384148. Its totient is φ = 29025536.

The previous prime is 72563819. The next prime is 72563893. The reversal of 72563860 is 6836527.

It can be written as a sum of positive squares in 2 ways, for example, as 52475536 + 20088324 = 7244^2 + 4482^2 .

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, 1814077 + ... + 1814116.

It is an arithmetic number, because the mean of its divisors is an integer number (12698679).

Almost surely, 2^72563860 is an apocalyptic number.

It is an amenable number.

72563860 is an abundant number, since it is smaller than the sum of its proper divisors (79820288).

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

72563860 is a wasteful number, since it uses less digits than its factorization.

72563860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628202 (or 3628200 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 72563860 is about 8518.4423458752. The cubic root of 72563860 is about 417.0999382833.

The spelling of 72563860 in words is "seventy-two million, five hundred sixty-three thousand, eight hundred sixty".