20672835 has 8 divisors (see below), whose sum is σ = 33076560. Its totient is φ = 11025504.

The previous prime is 20672807. The next prime is 20672843. The reversal of 20672835 is 53827602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20672835 - 2⁵ = 20672803 is a prime.

It is a super-2 number, since 2×20672835² = 854732213874450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20672796 and 20672805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689080 + ... + 689109.

It is an arithmetic number, because the mean of its divisors is an integer number (4134570).

Almost surely, 2^20672835 is an apocalyptic number.

20672835 is a deficient number, since it is larger than the sum of its proper divisors (12403725).

20672835 is a wasteful number, since it uses less digits than its factorization.

20672835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378197.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20672835 is about 4546.7389412633. The cubic root of 20672835 is about 274.4521766316.

The spelling of 20672835 in words is "twenty million, six hundred seventy-two thousand, eight hundred thirty-five".