2495640 has 64 divisors (see below), whose sum is σ = 8559360. Its totient is φ = 570240.

The previous prime is 2495621. The next prime is 2495657. The reversal of 2495640 is 465942.

2495640 = T₃₆₀ + T₃₆₁ + ... + T₃₉₄.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2495598 and 2495607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646 + ... + 2325.

It is an arithmetic number, because the mean of its divisors is an integer number (133740).

2^2495640 is an apocalyptic number.

2495640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2495640 is an abundant number, since it is smaller than the sum of its proper divisors (6063720).

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

2495640 is a wasteful number, since it uses less digits than its factorization.

2495640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2495640 is about 1579.7594753633. The cubic root of 2495640 is about 135.6419358465.

The spelling of 2495640 in words is "two million, four hundred ninety-five thousand, six hundred forty".