20673782 has 4 divisors (see below), whose sum is σ = 31010676. Its totient is φ = 10336890.

The previous prime is 20673769. The next prime is 20673797. The reversal of 20673782 is 28737602.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5168444 + ... + 5168447.

It is an arithmetic number, because the mean of its divisors is an integer number (7752669).

Almost surely, 2^20673782 is an apocalyptic number.

20673782 is a deficient number, since it is larger than the sum of its proper divisors (10336894).

20673782 is a wasteful number, since it uses less digits than its factorization.

20673782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10336893.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 20673782 is about 4546.8430806440. The cubic root of 20673782 is about 274.4563673525.

The spelling of 20673782 in words is "twenty million, six hundred seventy-three thousand, seven hundred eighty-two".