72454458 has 16 divisors (see below), whose sum is σ = 147285216. Its totient is φ = 23755440.

The previous prime is 72454427. The next prime is 72454483. The reversal of 72454458 is 85445427.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 98616 + ... + 99347.

It is an arithmetic number, because the mean of its divisors is an integer number (9205326).

Almost surely, 2^72454458 is an apocalyptic number.

72454458 is an abundant number, since it is smaller than the sum of its proper divisors (74830758).

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

72454458 is a wasteful number, since it uses less digits than its factorization.

72454458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198029.

The product of its digits is 179200, while the sum is 39.

The square root of 72454458 is about 8512.0184445289. The cubic root of 72454458 is about 416.8902171767.

The spelling of 72454458 in words is "seventy-two million, four hundred fifty-four thousand, four hundred fifty-eight".