20133015 has 32 divisors (see below), whose sum is σ = 38983680. Its totient is φ = 8661504.

The previous prime is 20132999. The next prime is 20133023. The reversal of 20133015 is 51033102.

It is a happy number.

It is not a de Polignac number, because 20133015 - 2⁴ = 20132999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 20132985 and 20133003.

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 in 31 ways as a sum of consecutive naturals, for example, 3855 + ... + 7424.

It is an arithmetic number, because the mean of its divisors is an integer number (1218240).

Almost surely, 2^20133015 is an apocalyptic number.

20133015 is a deficient number, since it is larger than the sum of its proper divisors (18850665).

20133015 is a wasteful number, since it uses less digits than its factorization.

20133015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11311.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20133015 is about 4486.9828392808. The cubic root of 20133015 is about 272.0421962722.

Adding to 20133015 its reverse (51033102), we get a palindrome (71166117).

The spelling of 20133015 in words is "twenty million, one hundred thirty-three thousand, fifteen".