2870920 has 32 divisors (see below), whose sum is σ = 6957720. Its totient is φ = 1059840.

The previous prime is 2870911. The next prime is 2870953. The reversal of 2870920 is 290782.

2870920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1473796 + 1397124 = 1214^2 + 1182^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2241 + ... + 3280.

2^2870920 is an apocalyptic number.

2870920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2870920 is an abundant number, since it is smaller than the sum of its proper divisors (4086800).

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

2870920 is a wasteful number, since it uses less digits than its factorization.

2870920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2870920 is about 1694.3789422676. The cubic root of 2870920 is about 142.1260535125.

The spelling of 2870920 in words is "two million, eight hundred seventy thousand, nine hundred twenty".