2857480 has 16 divisors (see below), whose sum is σ = 6429420. Its totient is φ = 1142976.

The previous prime is 2857471. The next prime is 2857493. The reversal of 2857480 is 847582.

It can be written as a sum of positive squares in 2 ways, for example, as 2842596 + 14884 = 1686^2 + 122^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35679 + ... + 35758.

2^2857480 is an apocalyptic number.

2857480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2857480 is an abundant number, since it is smaller than the sum of its proper divisors (3571940).

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

2857480 is a wasteful number, since it uses less digits than its factorization.

2857480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71448 (or 71444 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2857480 is about 1690.4082347173. The cubic root of 2857480 is about 141.9039223123.

The spelling of 2857480 in words is "two million, eight hundred fifty-seven thousand, four hundred eighty".