2506390 has 16 divisors (see below), whose sum is σ = 4533408. Its totient is φ = 997696.

The previous prime is 2506373. The next prime is 2506391. The reversal of 2506390 is 936052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154 + ... + 3106.

It is an arithmetic number, because the mean of its divisors is an integer number (283338).

2^2506390 is an apocalyptic number.

2506390 is a deficient number, since it is larger than the sum of its proper divisors (2027018).

2506390 is a wasteful number, since it uses less digits than its factorization.

2506390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 2506390 is about 1583.1582359322. The cubic root of 2506390 is about 135.8364166395.

The spelling of 2506390 in words is "two million, five hundred six thousand, three hundred ninety".