20777234 has 8 divisors (see below), whose sum is σ = 32520960. Its totient is φ = 9936916.

The previous prime is 20777231. The next prime is 20777249. The reversal of 20777234 is 43277702.

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 20777234.

It is not an unprimeable number, because it can be changed into a prime (20777231) 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, 225794 + ... + 225885.

It is an arithmetic number, because the mean of its divisors is an integer number (4065120).

Almost surely, 2^20777234 is an apocalyptic number.

20777234 is a deficient number, since it is larger than the sum of its proper divisors (11743726).

20777234 is a wasteful number, since it uses less digits than its factorization.

20777234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451704.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 20777234 is about 4558.2051292148. The cubic root of 20777234 is about 274.9134008314.

The spelling of 20777234 in words is "twenty million, seven hundred seventy-seven thousand, two hundred thirty-four".