72497858 has 8 divisors (see below), whose sum is σ = 108855360. Its totient is φ = 36212740.

The previous prime is 72497857. The next prime is 72497879. The reversal of 72497858 is 85879427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72497851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15518 + ... + 19641.

It is an arithmetic number, because the mean of its divisors is an integer number (13606920).

Almost surely, 2^72497858 is an apocalyptic number.

72497858 is a deficient number, since it is larger than the sum of its proper divisors (36357502).

72497858 is a wasteful number, since it uses less digits than its factorization.

72497858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36192.

The product of its digits is 1128960, while the sum is 50.

The square root of 72497858 is about 8514.5673994631. The cubic root of 72497858 is about 416.9734392198.

The spelling of 72497858 in words is "seventy-two million, four hundred ninety-seven thousand, eight hundred fifty-eight".