870290388 has 36 divisors (see below), whose sum is σ = 2399892768. Its totient is φ = 263724240.

The previous prime is 870290387. The next prime is 870290417. The reversal of 870290388 is 883092078.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870290387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098456 + ... + 1099247.

It is an arithmetic number, because the mean of its divisors is an integer number (66663688).

Almost surely, 2^870290388 is an apocalyptic number.

It is an amenable number.

870290388 is an abundant number, since it is smaller than the sum of its proper divisors (1529602380).

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

870290388 is a wasteful number, since it uses less digits than its factorization.

870290388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197724 (or 2197719 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 870290388 is about 29500.6845344307. The cubic root of 870290388 is about 954.7464721780.

The spelling of 870290388 in words is "eight hundred seventy million, two hundred ninety thousand, three hundred eighty-eight".