2547990 has 32 divisors (see below), whose sum is σ = 6795360. Its totient is φ = 679392.

The previous prime is 2547989. The next prime is 2547997. The reversal of 2547990 is 997452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2547997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4449 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (212355).

2^2547990 is an apocalyptic number.

2547990 is an abundant number, since it is smaller than the sum of its proper divisors (4247370).

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

2547990 is a wasteful number, since it uses less digits than its factorization.

2547990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9453 (or 9447 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 2547990 is about 1596.2424627857. The cubic root of 2547990 is about 136.5838152071.

The spelling of 2547990 in words is "two million, five hundred forty-seven thousand, nine hundred ninety".