20787082 has 8 divisors (see below), whose sum is σ = 31941252. Its totient is φ = 10140000.

The previous prime is 20787079. The next prime is 20787119. The reversal of 20787082 is 28078702.

It can be written as a sum of positive squares in 2 ways, for example, as 20784481 + 2601 = 4559^2 + 51^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126669 + ... + 126832.

Almost surely, 2^20787082 is an apocalyptic number.

20787082 is a deficient number, since it is larger than the sum of its proper divisors (11154170).

20787082 is a wasteful number, since it uses less digits than its factorization.

20787082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253544.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 20787082 is about 4559.2852510015. The cubic root of 20787082 is about 274.9568284847.

The spelling of 20787082 in words is "twenty million, seven hundred eighty-seven thousand, eighty-two".