2445860 has 24 divisors (see below), whose sum is σ = 5314680. Its totient is φ = 944384.

The previous prime is 2445857. The next prime is 2445881. The reversal of 2445860 is 685442.

2445860 = 79² + 80² + ... + 198².

It can be written as a sum of positive squares in 4 ways, for example, as 682276 + 1763584 = 826^2 + 1328^2 .

It is a super-2 number, since 2×2445860² = 11964462279200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 2688.

It is an arithmetic number, because the mean of its divisors is an integer number (221445).

2^2445860 is an apocalyptic number.

2445860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2445860 is an abundant number, since it is smaller than the sum of its proper divisors (2868820).

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

2445860 is a wasteful number, since it uses less digits than its factorization.

2445860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255 (or 4253 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2445860 is about 1563.9245506098. The cubic root of 2445860 is about 134.7339983959.

The spelling of 2445860 in words is "two million, four hundred forty-five thousand, eight hundred sixty".