20277130 has 8 divisors (see below), whose sum is σ = 36498852. Its totient is φ = 8110848.

The previous prime is 20277121. The next prime is 20277143. The reversal of 20277130 is 3177202.

It can be written as a sum of positive squares in 2 ways, for example, as 20277009 + 121 = 4503^2 + 11^2 .

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

It is a super-2 number, since 2×20277130² = 822324002073800, which contains 22 as substring.

It is a plaindrome in base 16.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1013847 + ... + 1013866.

Almost surely, 2^20277130 is an apocalyptic number.

20277130 is a deficient number, since it is larger than the sum of its proper divisors (16221722).

20277130 is a wasteful number, since it uses less digits than its factorization.

20277130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027720.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 20277130 is about 4503.0134354674. The cubic root of 20277130 is about 272.6897592511.

The spelling of 20277130 in words is "twenty million, two hundred seventy-seven thousand, one hundred thirty".