85720458 has 8 divisors (see below), whose sum is σ = 171440928. Its totient is φ = 28573484.

The previous prime is 85720447. The next prime is 85720493. The reversal of 85720458 is 85402758.

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

85720458 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7143366 + ... + 7143377.

It is an arithmetic number, because the mean of its divisors is an integer number (21430116).

Almost surely, 2^85720458 is an apocalyptic number.

85720458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

85720458 is a wasteful number, since it uses less digits than its factorization.

85720458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14286748.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 85720458 is about 9258.5343332517. The cubic root of 85720458 is about 440.9217213914.

The spelling of 85720458 in words is "eighty-five million, seven hundred twenty thousand, four hundred fifty-eight".