20612046 has 48 divisors (see below), whose sum is σ = 51652944. Its totient is φ = 5435136.

The previous prime is 20612027. The next prime is 20612089. The reversal of 20612046 is 64021602.

It is a happy number.

It is a super-2 number, since 2×20612046² = 849712880612232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1126 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (1076103).

Almost surely, 2^20612046 is an apocalyptic number.

20612046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20612046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25826472).

20612046 is an abundant number, since it is smaller than the sum of its proper divisors (31040898).

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

20612046 is a wasteful number, since it uses less digits than its factorization.

20612046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5425 (or 5418 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20612046 is about 4540.0491186770. The cubic root of 20612046 is about 274.1829013072.

Adding to 20612046 its reverse (64021602), we get a palindrome (84633648).

The spelling of 20612046 in words is "twenty million, six hundred twelve thousand, forty-six".