72428158 has 16 divisors (see below), whose sum is σ = 119673216. Its totient is φ = 32601240.

The previous prime is 72428149. The next prime is 72428159. The reversal of 72428158 is 85182427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72428159) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13716 + ... + 18247.

It is an arithmetic number, because the mean of its divisors is an integer number (7479576).

Almost surely, 2^72428158 is an apocalyptic number.

72428158 is a deficient number, since it is larger than the sum of its proper divisors (47245058).

72428158 is a wasteful number, since it uses less digits than its factorization.

72428158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32079.

The product of its digits is 35840, while the sum is 37.

The square root of 72428158 is about 8510.4734298393. The cubic root of 72428158 is about 416.8397692130.

It can be divided in two parts, 7242 and 8158, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 72428158 in words is "seventy-two million, four hundred twenty-eight thousand, one hundred fifty-eight".