2540258 has 30 divisors (see below), whose sum is σ = 4646859. Its totient is φ = 1041348.

The previous prime is 2540249. The next prime is 2540261. The reversal of 2540258 is 8520452.

It can be written as a sum of positive squares in only one way, i.e., 1270129 + 1270129 = 1127^2 + 1127^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1127.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 110435 + ... + 110457.

2^2540258 is an apocalyptic number.

2540258 is a deficient number, since it is larger than the sum of its proper divisors (2106601).

2540258 is an frugal number, since it uses more digits than its factorization.

2540258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 32 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2540258 is about 1593.8186847945. The cubic root of 2540258 is about 136.4455184723.

Multiplying 2540258 by its product of nonzero digits (3200), we get a square (8128825600 = 90160²).

The spelling of 2540258 in words is "two million, five hundred forty thousand, two hundred fifty-eight".