2433681 has 12 divisors (see below), whose sum is σ = 3547908. Its totient is φ = 1607424.

The previous prime is 2433679. The next prime is 2433689. The reversal of 2433681 is 1863342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46656 + 2387025 = 216^2 + 1545^2 .

It is not a de Polignac number, because 2433681 - 2¹ = 2433679 is a prime.

It is a super-2 number, since 2×2433681² = 11845606419522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2433689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (295659).

2^2433681 is an apocalyptic number.

It is an amenable number.

2433681 is a deficient number, since it is larger than the sum of its proper divisors (1114227).

2433681 is a wasteful number, since it uses less digits than its factorization.

2433681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512 (or 2509 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 2433681 is about 1560.0259613224. The cubic root of 2433681 is about 134.5099931308.

It can be divided in two parts, 24336 and 81, that multiplied together give a square (1971216 = 1404²).

The spelling of 2433681 in words is "two million, four hundred thirty-three thousand, six hundred eighty-one".