5631940 has 24 divisors (see below), whose sum is σ = 11874240. Its totient is φ = 2243808.

The previous prime is 5631911. The next prime is 5631943. The reversal of 5631940 is 491365.

5631940 is nontrivially palindromic in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 5631899 and 5631908.

It is not an unprimeable number, because it can be changed into a prime (5631943) 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, 7209 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (494760).

Almost surely, 2^5631940 is an apocalyptic number.

It is an amenable number.

5631940 is an abundant number, since it is smaller than the sum of its proper divisors (6242300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5631940 is a wasteful number, since it uses less digits than its factorization.

5631940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 5631940 is about 2373.1708745895. The cubic root of 5631940 is about 177.9177754308.

The spelling of 5631940 in words is "five million, six hundred thirty-one thousand, nine hundred forty".