2940381 has 20 divisors (see below), whose sum is σ = 4537984. Its totient is φ = 1895400.

The previous prime is 2940317. The next prime is 2940391. The reversal of 2940381 is 1830492.

It is not a de Polignac number, because 2940381 - 2⁶ = 2940317 is a prime.

It is a super-2 number, since 2×2940381² = 17291680850322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2940391) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1926 + ... + 3096.

2^2940381 is an apocalyptic number.

It is an amenable number.

2940381 is a deficient number, since it is larger than the sum of its proper divisors (1597603).

2940381 is a wasteful number, since it uses less digits than its factorization.

2940381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2940381 is about 1714.7539182052. The cubic root of 2940381 is about 143.2631631773.

It can be divided in two parts, 2940 and 381, that added together give a triangular number (3321 = T₈₁).

The spelling of 2940381 in words is "two million, nine hundred forty thousand, three hundred eighty-one".