2229381 has 24 divisors (see below), whose sum is σ = 4016064. Its totient is φ = 1157760.

The previous prime is 2229379. The next prime is 2229389. The reversal of 2229381 is 1839222.

It is a happy number.

It is not a de Polignac number, because 2229381 - 2¹ = 2229379 is a prime.

It is a super-2 number, since 2×2229381² = 9940279286322, which contains 22 as substring.

2229381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 916 + ... + 2301.

It is an arithmetic number, because the mean of its divisors is an integer number (167336).

2^2229381 is an apocalyptic number.

2229381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2229381 is a deficient number, since it is larger than the sum of its proper divisors (1786683).

2229381 is a wasteful number, since it uses less digits than its factorization.

2229381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241 (or 3238 counting only the distinct ones).

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

The square root of 2229381 is about 1493.1111813927. Note that the first 4 decimals coincide. The cubic root of 2229381 is about 130.6355661729.

It can be divided in two parts, 22 and 29381, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 2229381 in words is "two million, two hundred twenty-nine thousand, three hundred eighty-one".