20413828 has 36 divisors (see below), whose sum is σ = 38447472. Its totient is φ = 9480240.

The previous prime is 20413801. The next prime is 20413831. The reversal of 20413828 is 82831402.

It is a super-2 number, since 2×20413828² = 833448747227168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20413796 and 20413805.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96643 + ... + 96853.

Almost surely, 2^20413828 is an apocalyptic number.

It is an amenable number.

20413828 is a deficient number, since it is larger than the sum of its proper divisors (18033644).

20413828 is a wasteful number, since it uses less digits than its factorization.

20413828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20413828 is about 4518.1664422639. The cubic root of 20413828 is about 273.3011654920.

The spelling of 20413828 in words is "twenty million, four hundred thirteen thousand, eight hundred twenty-eight".