20477102 has 4 divisors (see below), whose sum is σ = 30715656. Its totient is φ = 10238550.

The previous prime is 20477089. The next prime is 20477113. The reversal of 20477102 is 20177402.

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5119274 + ... + 5119277.

It is an arithmetic number, because the mean of its divisors is an integer number (7678914).

Almost surely, 2^20477102 is an apocalyptic number.

20477102 is a deficient number, since it is larger than the sum of its proper divisors (10238554).

20477102 is a wasteful number, since it uses less digits than its factorization.

20477102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10238553.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 20477102 is about 4525.1632014768. The cubic root of 20477102 is about 273.5832458848.

The spelling of 20477102 in words is "twenty million, four hundred seventy-seven thousand, one hundred two".