84207144 has 32 divisors (see below), whose sum is σ = 240592320. Its totient is φ = 24059136.

The previous prime is 84207143. The next prime is 84207161. The reversal of 84207144 is 44170248.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84207143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250449 + ... + 250784.

It is an arithmetic number, because the mean of its divisors is an integer number (7518510).

Almost surely, 2^84207144 is an apocalyptic number.

84207144 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

84207144 is an abundant number, since it is smaller than the sum of its proper divisors (156385176).

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

84207144 is a wasteful number, since it uses less digits than its factorization.

84207144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501249 (or 501245 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 84207144 is about 9176.4450633129. The cubic root of 84207144 is about 438.3116149497.

The spelling of 84207144 in words is "eighty-four million, two hundred seven thousand, one hundred forty-four".