20260977 has 8 divisors (see below), whose sum is σ = 29470560. Its totient is φ = 12279360.

The previous prime is 20260963. The next prime is 20260979. The reversal of 20260977 is 77906202.

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

It is not a de Polignac number, because 20260977 - 2⁶ = 20260913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 613969 = 20260977 / (2 + 0 + 2 + 6 + 0 + 9 + 7 + 7).

It is not an unprimeable number, because it can be changed into a prime (20260979) 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 in 7 ways as a sum of consecutive naturals, for example, 306952 + ... + 307017.

It is an arithmetic number, because the mean of its divisors is an integer number (3683820).

Almost surely, 2^20260977 is an apocalyptic number.

It is an amenable number.

20260977 is a deficient number, since it is larger than the sum of its proper divisors (9209583).

20260977 is a wasteful number, since it uses less digits than its factorization.

20260977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613983.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 20260977 is about 4501.2195014240. The cubic root of 20260977 is about 272.6173307265.

The spelling of 20260977 in words is "twenty million, two hundred sixty thousand, nine hundred seventy-seven".