20197274 has 4 divisors (see below), whose sum is σ = 30295914. Its totient is φ = 10098636.

The previous prime is 20197271. The next prime is 20197277. The reversal of 20197274 is 47279102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20197271) and next prime (20197277).

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 4141225 = 4007^2 + 2035^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20197274.

It is not an unprimeable number, because it can be changed into a prime (20197271) 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, 5049317 + ... + 5049320.

Almost surely, 2^20197274 is an apocalyptic number.

20197274 is a deficient number, since it is larger than the sum of its proper divisors (10098640).

20197274 is a wasteful number, since it uses less digits than its factorization.

20197274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098639.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 20197274 is about 4494.1377370971. The cubic root of 20197274 is about 272.3313166393.

The spelling of 20197274 in words is "twenty million, one hundred ninety-seven thousand, two hundred seventy-four".