20412015 has 16 divisors (see below), whose sum is σ = 35171808. Its totient is φ = 10048896.

The previous prime is 20411983. The next prime is 20412037. The reversal of 20412015 is 51021402.

It is not a de Polignac number, because 20412015 - 2⁵ = 20411983 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 = 20411985 and 20412003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52144 + ... + 52533.

It is an arithmetic number, because the mean of its divisors is an integer number (2198238).

Almost surely, 2^20412015 is an apocalyptic number.

20412015 is a deficient number, since it is larger than the sum of its proper divisors (14759793).

20412015 is a wasteful number, since it uses less digits than its factorization.

20412015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104698.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20412015 is about 4517.9658033234. The cubic root of 20412015 is about 273.2930744130.

Adding to 20412015 its reverse (51021402), we get a palindrome (71433417).

The spelling of 20412015 in words is "twenty million, four hundred twelve thousand, fifteen".