20475108 has 36 divisors (see below), whose sum is σ = 51999948. Its totient is φ = 6792960.

The previous prime is 20475107. The next prime is 20475121. The reversal of 20475108 is 80157402.

It can be written as a sum of positive squares in 2 ways, for example, as 2985984 + 17489124 = 1728^2 + 4182^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20475108² = 838460095223328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20475101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7168 + ... + 9608.

It is an arithmetic number, because the mean of its divisors is an integer number (1444443).

Almost surely, 2^20475108 is an apocalyptic number.

It is an amenable number.

20475108 is an abundant number, since it is smaller than the sum of its proper divisors (31524840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20475108 is a wasteful number, since it uses less digits than its factorization.

20475108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684 (or 2679 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20475108 is about 4524.9428725676. The cubic root of 20475108 is about 273.5743653524.

The spelling of 20475108 in words is "twenty million, four hundred seventy-five thousand, one hundred eight".