2402981 has 8 divisors (see below), whose sum is σ = 2775360. Its totient is φ = 2037888.

The previous prime is 2402951. The next prime is 2402999. The reversal of 2402981 is 1892042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2402981 is a prime.

It is a super-2 number, since 2×2402981² = 11548635372722, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2402981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402921) 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, 1091 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (346920).

2^2402981 is an apocalyptic number.

It is an amenable number.

2402981 is a deficient number, since it is larger than the sum of its proper divisors (372379).

2402981 is an equidigital number, since it uses as much as digits as its factorization.

2402981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2402981 is about 1550.1551535250. The cubic root of 2402981 is about 133.9419998489.

The spelling of 2402981 in words is "two million, four hundred two thousand, nine hundred eighty-one".