72285158 has 48 divisors (see below), whose sum is σ = 127680000. Its totient is φ = 30579120.

The previous prime is 72285137. The next prime is 72285167. The reversal of 72285158 is 85158227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 363143 + ... + 363341.

It is an arithmetic number, because the mean of its divisors is an integer number (2660000).

Almost surely, 2^72285158 is an apocalyptic number.

72285158 is a deficient number, since it is larger than the sum of its proper divisors (55394842).

72285158 is a wasteful number, since it uses less digits than its factorization.

72285158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 310 counting only the distinct ones).

The product of its digits is 44800, while the sum is 38.

The square root of 72285158 is about 8502.0678661135. The cubic root of 72285158 is about 416.5652564581.

The spelling of 72285158 in words is "seventy-two million, two hundred eighty-five thousand, one hundred fifty-eight".