20477108 has 6 divisors (see below), whose sum is σ = 35834946. Its totient is φ = 10238552.

The previous prime is 20477089. The next prime is 20477113. The reversal of 20477108 is 80177402.

It can be written as a sum of positive squares in only one way, i.e., 15038884 + 5438224 = 3878^2 + 2332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559635 + ... + 2559642.

It is an arithmetic number, because the mean of its divisors is an integer number (5972491).

Almost surely, 2^20477108 is an apocalyptic number.

It is an amenable number.

20477108 is a deficient number, since it is larger than the sum of its proper divisors (15357838).

20477108 is a wasteful number, since it uses less digits than its factorization.

20477108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119281 (or 5119279 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 20477108 is about 4525.1638644363. The cubic root of 20477108 is about 273.5832726057.

The spelling of 20477108 in words is "twenty million, four hundred seventy-seven thousand, one hundred eight".