20880074 has 4 divisors (see below), whose sum is σ = 31320114. Its totient is φ = 10440036.

The previous prime is 20880071. The next prime is 20880077. The reversal of 20880074 is 47008802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47008802 = 2 ⋅23504401.

It is an interprime number because it is at equal distance from previous prime (20880071) and next prime (20880077).

It can be written as a sum of positive squares in only one way, i.e., 10608049 + 10272025 = 3257^2 + 3205^2 .

It is not an unprimeable number, because it can be changed into a prime (20880071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5220017 + ... + 5220020.

Almost surely, 2^20880074 is an apocalyptic number.

20880074 is a deficient number, since it is larger than the sum of its proper divisors (10440040).

20880074 is a wasteful number, since it uses less digits than its factorization.

20880074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440039.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 20880074 is about 4569.4719607412. The cubic root of 20880074 is about 275.3662294153.

Adding to 20880074 its reverse (47008802), we get a palindrome (67888876).

The spelling of 20880074 in words is "twenty million, eight hundred eighty thousand, seventy-four".