84371720 has 16 divisors (see below), whose sum is σ = 189836460. Its totient is φ = 33748672.

The previous prime is 84371713. The next prime is 84371737. The reversal of 84371720 is 2717348.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80964004 + 3407716 = 8998^2 + 1846^2 .

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, 1054607 + ... + 1054686.

Almost surely, 2^84371720 is an apocalyptic number.

It is an amenable number.

84371720 is an abundant number, since it is smaller than the sum of its proper divisors (105464740).

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

84371720 is a wasteful number, since it uses less digits than its factorization.

84371720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109304 (or 2109300 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 84371720 is about 9185.4079931160. The cubic root of 84371720 is about 438.5969772342.

The spelling of 84371720 in words is "eighty-four million, three hundred seventy-one thousand, seven hundred twenty".