84457072 has 20 divisors (see below), whose sum is σ = 187012336. Its totient is φ = 36195840.

The previous prime is 84457067. The next prime is 84457097. The reversal of 84457072 is 27075448.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 376929 + ... + 377152.

Almost surely, 2^84457072 is an apocalyptic number.

It is an amenable number.

84457072 is an abundant number, since it is smaller than the sum of its proper divisors (102555264).

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

84457072 is a wasteful number, since it uses less digits than its factorization.

84457072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754096 (or 754090 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 84457072 is about 9190.0528834169. The cubic root of 84457072 is about 438.7448250080.

The spelling of 84457072 in words is "eighty-four million, four hundred fifty-seven thousand, seventy-two".