20788270 has 8 divisors (see below), whose sum is σ = 37418904. Its totient is φ = 8315304.

The previous prime is 20788267. The next prime is 20788301. The reversal of 20788270 is 7288702.

20788270 = 1010² + 1011² + ... + 1029².

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1039404 + ... + 1039423.

It is an arithmetic number, because the mean of its divisors is an integer number (4677363).

Almost surely, 2^20788270 is an apocalyptic number.

20788270 is a deficient number, since it is larger than the sum of its proper divisors (16630634).

20788270 is a wasteful number, since it uses less digits than its factorization.

20788270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078834.

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

The square root of 20788270 is about 4559.4155327191. The cubic root of 20788270 is about 274.9620663930.

The spelling of 20788270 in words is "twenty million, seven hundred eighty-eight thousand, two hundred seventy".