84742920 has 48 divisors (see below), whose sum is σ = 275415660. Its totient is φ = 22598016.

The previous prime is 84742891. The next prime is 84742937. The reversal of 84742920 is 2924748.

It can be written as a sum of positive squares in 2 ways, for example, as 84162276 + 580644 = 9174^2 + 762^2 .

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

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, 117339 + ... + 118058.

Almost surely, 2^84742920 is an apocalyptic number.

It is an amenable number.

84742920 is an abundant number, since it is smaller than the sum of its proper divisors (190672740).

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

84742920 is a wasteful number, since it uses less digits than its factorization.

84742920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235414 (or 235407 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 84742920 is about 9205.5917789135. The cubic root of 84742920 is about 439.2392501775.

The spelling of 84742920 in words is "eighty-four million, seven hundred forty-two thousand, nine hundred twenty".