2721633406 has 32 divisors (see below), whose sum is σ = 4253534208. Its totient is φ = 1304677920.

The previous prime is 2721633353. The next prime is 2721633407. The reversal of 2721633406 is 6043361272.

2721633406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721633407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5410551 + ... + 5411053.

It is an arithmetic number, because the mean of its divisors is an integer number (132922944).

Almost surely, 2^2721633406 is an apocalyptic number.

2721633406 is a deficient number, since it is larger than the sum of its proper divisors (1531900802).

2721633406 is a wasteful number, since it uses less digits than its factorization.

2721633406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 2721633406 is about 52169.2764565506. The cubic root of 2721633406 is about 1396.1857752699.

Adding to 2721633406 its reverse (6043361272), we get a palindrome (8764994678).

The spelling of 2721633406 in words is "two billion, seven hundred twenty-one million, six hundred thirty-three thousand, four hundred six".