20789270 has 8 divisors (see below), whose sum is σ = 37420704. Its totient is φ = 8315704.

The previous prime is 20789269. The next prime is 20789273. The reversal of 20789270 is 7298702.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20789270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20789273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039454 + ... + 1039473.

It is an arithmetic number, because the mean of its divisors is an integer number (4677588).

Almost surely, 2^20789270 is an apocalyptic number.

20789270 is a deficient number, since it is larger than the sum of its proper divisors (16631434).

20789270 is a wasteful number, since it uses less digits than its factorization.

20789270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078934.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 20789270 is about 4559.5251945789. The cubic root of 20789270 is about 274.9664752521.

The spelling of 20789270 in words is "twenty million, seven hundred eighty-nine thousand, two hundred seventy".