20545496 has 8 divisors (see below), whose sum is σ = 38522820. Its totient is φ = 10272744.

The previous prime is 20545493. The next prime is 20545531. The reversal of 20545496 is 69454502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20545493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284086 + ... + 1284101.

Almost surely, 2^20545496 is an apocalyptic number.

It is an amenable number.

20545496 is a deficient number, since it is larger than the sum of its proper divisors (17977324).

20545496 is a wasteful number, since it uses less digits than its factorization.

20545496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568193 (or 2568189 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 20545496 is about 4532.7139772988. The cubic root of 20545496 is about 273.8874988802.

Adding to 20545496 its reverse (69454502), we get a palindrome (89999998).

The spelling of 20545496 in words is "twenty million, five hundred forty-five thousand, four hundred ninety-six".