2529864 has 48 divisors (see below), whose sum is σ = 7027020. Its totient is φ = 821760.

The previous prime is 2529827. The next prime is 2529881. The reversal of 2529864 is 4689252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2528100 + 1764 = 1590^2 + 42^2 .

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

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, 2524 + ... + 3380.

2^2529864 is an apocalyptic number.

2529864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2529864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3513510).

2529864 is an abundant number, since it is smaller than the sum of its proper divisors (4497156).

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

2529864 is a wasteful number, since it uses less digits than its factorization.

2529864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 903 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2529864 is about 1590.5546202504. The cubic root of 2529864 is about 136.2591655591.

The spelling of 2529864 in words is "two million, five hundred twenty-nine thousand, eight hundred sixty-four".