2630381 has 16 divisors (see below), whose sum is σ = 2999808. Its totient is φ = 2289600.

The previous prime is 2630377. The next prime is 2630389. The reversal of 2630381 is 1830362.

It is a cyclic number.

It is not a de Polignac number, because 2630381 - 2² = 2630377 is a prime.

It is a super-2 number, since 2×2630381² = 13837808410322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2630389) 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, 24530 + ... + 24636.

It is an arithmetic number, because the mean of its divisors is an integer number (187488).

2^2630381 is an apocalyptic number.

It is an amenable number.

2630381 is a deficient number, since it is larger than the sum of its proper divisors (369427).

2630381 is a wasteful number, since it uses less digits than its factorization.

2630381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2630381 is about 1621.8449371010. The cubic root of 2630381 is about 138.0404033485.

The spelling of 2630381 in words is "two million, six hundred thirty thousand, three hundred eighty-one".