84480578 has 32 divisors (see below), whose sum is σ = 156567936. Its totient is φ = 33291648.

The previous prime is 84480551. The next prime is 84480581. The reversal of 84480578 is 87508448.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56225 + ... + 57707.

It is an arithmetic number, because the mean of its divisors is an integer number (4892748).

Almost surely, 2^84480578 is an apocalyptic number.

84480578 is a deficient number, since it is larger than the sum of its proper divisors (72087358).

84480578 is a wasteful number, since it uses less digits than its factorization.

84480578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818.

The product of its (nonzero) digits is 286720, while the sum is 44.

The square root of 84480578 is about 9191.3316771837. The cubic root of 84480578 is about 438.7855248925.

It can be divided in two parts, 84480 and 578, that added together give a palindrome (85058).

The spelling of 84480578 in words is "eighty-four million, four hundred eighty thousand, five hundred seventy-eight".