20506076 has 12 divisors (see below), whose sum is σ = 35948472. Its totient is φ = 10235088.

The previous prime is 20506067. The next prime is 20506081. The reversal of 20506076 is 67060502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (2995706).

Almost surely, 2^20506076 is an apocalyptic number.

It is an amenable number.

20506076 is a deficient number, since it is larger than the sum of its proper divisors (15442396).

20506076 is a wasteful number, since it uses less digits than its factorization.

20506076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8980 (or 8978 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 20506076 is about 4528.3635013104. The cubic root of 20506076 is about 273.7122202751.

Adding to 20506076 its reverse (67060502), we get a palindrome (87566578).

The spelling of 20506076 in words is "twenty million, five hundred six thousand, seventy-six".