87844790 has 48 divisors (see below), whose sum is σ = 182997360. Its totient is φ = 30254400.

The previous prime is 87844789. The next prime is 87844817. The reversal of 87844790 is 9744878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21080 + ... + 24900.

It is an arithmetic number, because the mean of its divisors is an integer number (3812445).

Almost surely, 2^87844790 is an apocalyptic number.

87844790 is an abundant number, since it is smaller than the sum of its proper divisors (95152570).

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

87844790 is a wasteful number, since it uses less digits than its factorization.

87844790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869 (or 3858 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 87844790 is about 9372.5551478772. Note that the first 3 decimals coincide. The cubic root of 87844790 is about 444.5343612288.

The spelling of 87844790 in words is "eighty-seven million, eight hundred forty-four thousand, seven hundred ninety".