2870388 has 36 divisors (see below), whose sum is σ = 7364448. Its totient is φ = 942480.

The previous prime is 2870353. The next prime is 2870393. The reversal of 2870388 is 8830782.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1995 + ... + 3117.

It is an arithmetic number, because the mean of its divisors is an integer number (204568).

2^2870388 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 2870388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3682224).

2870388 is an abundant number, since it is smaller than the sum of its proper divisors (4494060).

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

2870388 is a wasteful number, since it uses less digits than its factorization.

2870388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 2870388 is about 1694.2219453189. The cubic root of 2870388 is about 142.1172740119.

The spelling of 2870388 in words is "two million, eight hundred seventy thousand, three hundred eighty-eight".