84265720 has 128 divisors (see below), whose sum is σ = 239500800. Its totient is φ = 25920000.

The previous prime is 84265693. The next prime is 84265751. The reversal of 84265720 is 2756248.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335595 + ... + 335845.

It is an arithmetic number, because the mean of its divisors is an integer number (1871100).

Almost surely, 2^84265720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84265720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119750400).

84265720 is an abundant number, since it is smaller than the sum of its proper divisors (155235080).

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

84265720 is a wasteful number, since it uses less digits than its factorization.

84265720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 84265720 is about 9179.6361583671. The cubic root of 84265720 is about 438.4132238672.

The spelling of 84265720 in words is "eighty-four million, two hundred sixty-five thousand, seven hundred twenty".