20615046 has 32 divisors (see below), whose sum is σ = 43158528. Its totient is φ = 6557760.

The previous prime is 20615041. The next prime is 20615047. The reversal of 20615046 is 64051602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20615041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10671 + ... + 12453.

It is an arithmetic number, because the mean of its divisors is an integer number (1348704).

Almost surely, 2^20615046 is an apocalyptic number.

20615046 is an abundant number, since it is smaller than the sum of its proper divisors (22543482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20615046 is a wasteful number, since it uses less digits than its factorization.

20615046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20615046 is about 4540.3794995573. The cubic root of 20615046 is about 274.1962027329.

Adding to 20615046 its reverse (64051602), we get a palindrome (84666648).

The spelling of 20615046 in words is "twenty million, six hundred fifteen thousand, forty-six".