20002774 has 8 divisors (see below), whose sum is σ = 32731848. Its totient is φ = 9092160.

The previous prime is 20002771. The next prime is 20002799. The reversal of 20002774 is 47720002.

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

It is a super-2 number, since 2×20002774² = 800221935390152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 909217 = 20002774 / (2 + 0 + 0 + 0 + 2 + 7 + 7 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002771) 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, 454587 + ... + 454630.

It is an arithmetic number, because the mean of its divisors is an integer number (4091481).

Almost surely, 2^20002774 is an apocalyptic number.

20002774 is a deficient number, since it is larger than the sum of its proper divisors (12729074).

20002774 is a wasteful number, since it uses less digits than its factorization.

20002774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909230.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20002774 is about 4472.4460868746. The cubic root of 20002774 is about 271.4543107368.

Adding to 20002774 its reverse (47720002), we get a palindrome (67722776).

It can be divided in two parts, 2000 and 2774, that added together give a palindrome (4774).

The spelling of 20002774 in words is "twenty million, two thousand, seven hundred seventy-four".