84845520 has 60 divisors (see below), whose sum is σ = 284941956. Its totient is φ = 22625280.

The previous prime is 84845489. The next prime is 84845531. The reversal of 84845520 is 2554848.

It can be written as a sum of positive squares in 2 ways, for example, as 18455616 + 66389904 = 4296^2 + 8148^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58201 + ... + 59640.

Almost surely, 2^84845520 is an apocalyptic number.

84845520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84845520 is an abundant number, since it is smaller than the sum of its proper divisors (200096436).

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

84845520 is a wasteful number, since it uses less digits than its factorization.

84845520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117860 (or 117851 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 84845520 is about 9211.1627930463. The cubic root of 84845520 is about 439.4164440240.

The spelling of 84845520 in words is "eighty-four million, eight hundred forty-five thousand, five hundred twenty".