20277346 has 4 divisors (see below), whose sum is σ = 30416022. Its totient is φ = 10138672.

The previous prime is 20277343. The next prime is 20277353. The reversal of 20277346 is 64377202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64377202 = 2 ⋅32188601.

It can be written as a sum of positive squares in only one way, i.e., 17682025 + 2595321 = 4205^2 + 1611^2 .

It is a super-2 number, since 2×20277346² = 822341521607432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20277343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5069335 + ... + 5069338.

Almost surely, 2^20277346 is an apocalyptic number.

20277346 is a deficient number, since it is larger than the sum of its proper divisors (10138676).

20277346 is a wasteful number, since it uses less digits than its factorization.

20277346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10138675.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 20277346 is about 4503.0374193426. The cubic root of 20277346 is about 272.6907275140.

The spelling of 20277346 in words is "twenty million, two hundred seventy-seven thousand, three hundred forty-six".