20201415 has 32 divisors (see below), whose sum is σ = 35071680. Its totient is φ = 9929088.

The previous prime is 20201407. The next prime is 20201437. The reversal of 20201415 is 51410202.

It is not a de Polignac number, because 20201415 - 2³ = 20201407 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 = 20201394 and 20201403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32649 + ... + 33261.

It is an arithmetic number, because the mean of its divisors is an integer number (1095990).

Almost surely, 2^20201415 is an apocalyptic number.

20201415 is a deficient number, since it is larger than the sum of its proper divisors (14870265).

20201415 is an equidigital number, since it uses as much as digits as its factorization.

20201415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 634 counting only the distinct ones).

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

The square root of 20201415 is about 4494.5984247761. The cubic root of 20201415 is about 272.3499271858.

Adding to 20201415 its reverse (51410202), we get a palindrome (71611617).

The spelling of 20201415 in words is "twenty million, two hundred one thousand, four hundred fifteen".