2528420 has 12 divisors (see below), whose sum is σ = 5309724. Its totient is φ = 1011360.

The previous prime is 2528419. The next prime is 2528441. The reversal of 2528420 is 248252.

It can be written as a sum of positive squares in 2 ways, for example, as 1459264 + 1069156 = 1208^2 + 1034^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

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, 63191 + ... + 63230.

It is an arithmetic number, because the mean of its divisors is an integer number (442477).

2^2528420 is an apocalyptic number.

2528420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2528420 is an abundant number, since it is smaller than the sum of its proper divisors (2781304).

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

2528420 is a wasteful number, since it uses less digits than its factorization.

2528420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126430 (or 126428 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2528420 is about 1590.1006257467. The cubic root of 2528420 is about 136.2332358804.

The spelling of 2528420 in words is "two million, five hundred twenty-eight thousand, four hundred twenty".