20415002 has 4 divisors (see below), whose sum is σ = 30622506. Its totient is φ = 10207500.

The previous prime is 20414993. The next prime is 20415013. The reversal of 20415002 is 20051402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12524521 + 7890481 = 3539^2 + 2809^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103749 + ... + 5103752.

Almost surely, 2^20415002 is an apocalyptic number.

20415002 is a deficient number, since it is larger than the sum of its proper divisors (10207504).

20415002 is a wasteful number, since it uses less digits than its factorization.

20415002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207503.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20415002 is about 4518.2963603553. The cubic root of 20415002 is about 273.3064045782.

Adding to 20415002 its reverse (20051402), we get a palindrome (40466404).

The spelling of 20415002 in words is "twenty million, four hundred fifteen thousand, two".