84144788 has 48 divisors (see below), whose sum is σ = 187106304. Its totient is φ = 32209920.

The previous prime is 84144779. The next prime is 84144791. The reversal of 84144788 is 88744148.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7556 + ... + 15012.

It is an arithmetic number, because the mean of its divisors is an integer number (3898048).

Almost surely, 2^84144788 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 84144788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93553152).

84144788 is an abundant number, since it is smaller than the sum of its proper divisors (102961516).

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

84144788 is a wasteful number, since it uses less digits than its factorization.

84144788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512 (or 7510 counting only the distinct ones).

The product of its digits is 229376, while the sum is 44.

The square root of 84144788 is about 9173.0468220761. The cubic root of 84144788 is about 438.2033972582.

The spelling of 84144788 in words is "eighty-four million, one hundred forty-four thousand, seven hundred eighty-eight".