20274284 has 6 divisors (see below), whose sum is σ = 35480004. Its totient is φ = 10137140.

The previous prime is 20274283. The next prime is 20274299. The reversal of 20274284 is 48247202.

It is a super-2 number, since 2×20274284² = 822093183425312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20274283) by changing a digit.

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 as a sum of consecutive naturals, namely, 2534282 + ... + 2534289.

It is an arithmetic number, because the mean of its divisors is an integer number (5913334).

Almost surely, 2^20274284 is an apocalyptic number.

It is an amenable number.

20274284 is a deficient number, since it is larger than the sum of its proper divisors (15205720).

20274284 is a wasteful number, since it uses less digits than its factorization.

20274284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068575 (or 5068573 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 20274284 is about 4502.6974137732. The cubic root of 20274284 is about 272.6770008484.

The spelling of 20274284 in words is "twenty million, two hundred seventy-four thousand, two hundred eighty-four".