84140628 has 48 divisors (see below), whose sum is σ = 230655936. Its totient is φ = 23535360.

The previous prime is 84140621. The next prime is 84140659. The reversal of 84140628 is 82604148.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84140621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22801 + ... + 26232.

It is an arithmetic number, because the mean of its divisors is an integer number (4805332).

Almost surely, 2^84140628 is an apocalyptic number.

It is an amenable number.

84140628 is an abundant number, since it is smaller than the sum of its proper divisors (146515308).

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

84140628 is a wasteful number, since it uses less digits than its factorization.

84140628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49064 (or 49062 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 84140628 is about 9172.8200680053. The cubic root of 84140628 is about 438.1961757526.

The spelling of 84140628 in words is "eighty-four million, one hundred forty thousand, six hundred twenty-eight".