87070844 has 72 divisors (see below), whose sum is σ = 189221760. Its totient is φ = 34854624.

The previous prime is 87070831. The next prime is 87070849. The reversal of 87070844 is 44807078.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 87070798 and 87070807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87070849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383459 + ... + 383685.

It is an arithmetic number, because the mean of its divisors is an integer number (2628080).

Almost surely, 2^87070844 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 87070844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94610880).

87070844 is an abundant number, since it is smaller than the sum of its proper divisors (102150916).

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

87070844 is a wasteful number, since it uses less digits than its factorization.

87070844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 87070844 is about 9331.1759173215. The cubic root of 87070844 is about 443.2250027708.

The spelling of 87070844 in words is "eighty-seven million, seventy thousand, eight hundred forty-four".