72283870 has 32 divisors (see below), whose sum is σ = 133594272. Its totient is φ = 28150272.

The previous prime is 72283843. The next prime is 72283873. The reversal of 72283870 is 7838227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72283873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59994 + ... + 61186.

It is an arithmetic number, because the mean of its divisors is an integer number (4174821).

Almost surely, 2^72283870 is an apocalyptic number.

72283870 is a deficient number, since it is larger than the sum of its proper divisors (61310402).

72283870 is a wasteful number, since it uses less digits than its factorization.

72283870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 72283870 is about 8501.9921194976. The cubic root of 72283870 is about 416.5627822792.

It can be divided in two parts, 72283 and 870, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 72283870 in words is "seventy-two million, two hundred eighty-three thousand, eight hundred seventy".