20148633 has 12 divisors (see below), whose sum is σ = 29166228. Its totient is φ = 13403520.

The previous prime is 20148631. The next prime is 20148641. The reversal of 20148633 is 33684102.

It is a happy number.

20148633 is a `hidden beast` number, since 20 + 1 + 4 + 8 + 633 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8225424 + 11923209 = 2868^2 + 3453^2 .

It is not a de Polignac number, because 20148633 - 2¹ = 20148631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20148597 and 20148606.

It is not an unprimeable number, because it can be changed into a prime (20148631) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2541 + ... + 6837.

It is an arithmetic number, because the mean of its divisors is an integer number (2430519).

Almost surely, 2^20148633 is an apocalyptic number.

It is an amenable number.

20148633 is a deficient number, since it is larger than the sum of its proper divisors (9017595).

20148633 is a wasteful number, since it uses less digits than its factorization.

20148633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824 (or 4821 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20148633 is about 4488.7228695922. The cubic root of 20148633 is about 272.1125228287.

The spelling of 20148633 in words is "twenty million, one hundred forty-eight thousand, six hundred thirty-three".