20490115 has 8 divisors (see below), whose sum is σ = 24645600. Its totient is φ = 16353792.

The previous prime is 20490109. The next prime is 20490121. The reversal of 20490115 is 51109402.

It is an interprime number because it is at equal distance from previous prime (20490109) and next prime (20490121).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20490115 - 2¹⁵ = 20457347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2319 + ... + 6808.

It is an arithmetic number, because the mean of its divisors is an integer number (3080700).

Almost surely, 2^20490115 is an apocalyptic number.

20490115 is a deficient number, since it is larger than the sum of its proper divisors (4155485).

20490115 is an equidigital number, since it uses as much as digits as its factorization.

20490115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9581.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 20490115 is about 4526.6008218088. The cubic root of 20490115 is about 273.6411867806.

Adding to 20490115 its reverse (51109402), we get a palindrome (71599517).

The spelling of 20490115 in words is "twenty million, four hundred ninety thousand, one hundred fifteen".