84720896 has 36 divisors (see below), whose sum is σ = 182126532. Its totient is φ = 39100416.

The previous prime is 84720869. The next prime is 84720913. The reversal of 84720896 is 69802748.

It can be written as a sum of positive squares in 2 ways, for example, as 6150400 + 78570496 = 2480^2 + 8864^2 .

It is a congruent 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, 9401 + ... + 16056.

Almost surely, 2^84720896 is an apocalyptic number.

It is an amenable number.

84720896 is an abundant number, since it is smaller than the sum of its proper divisors (97405636).

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

84720896 is a wasteful number, since it uses less digits than its factorization.

84720896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25486 (or 25472 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 84720896 is about 9204.3954717298. The cubic root of 84720896 is about 439.2011953036.

The spelling of 84720896 in words is "eighty-four million, seven hundred twenty thousand, eight hundred ninety-six".