20633486 has 4 divisors (see below), whose sum is σ = 30950232. Its totient is φ = 10316742.

The previous prime is 20633447. The next prime is 20633489. The reversal of 20633486 is 68433602.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20633489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5158370 + ... + 5158373.

It is an arithmetic number, because the mean of its divisors is an integer number (7737558).

Almost surely, 2^20633486 is an apocalyptic number.

20633486 is a deficient number, since it is larger than the sum of its proper divisors (10316746).

20633486 is a wasteful number, since it uses less digits than its factorization.

20633486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10316745.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 20633486 is about 4542.4097129167. The cubic root of 20633486 is about 274.2779338329.

The spelling of 20633486 in words is "twenty million, six hundred thirty-three thousand, four hundred eighty-six".