20047446 has 16 divisors (see below), whose sum is σ = 44550000. Its totient is φ = 6682464.

The previous prime is 20047411. The next prime is 20047453. The reversal of 20047446 is 64474002.

It is a super-2 number, since 2×20047446² = 803800182245832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 7 ways as a sum of consecutive naturals, for example, 185571 + ... + 185678.

It is an arithmetic number, because the mean of its divisors is an integer number (2784375).

Almost surely, 2^20047446 is an apocalyptic number.

20047446 is an abundant number, since it is smaller than the sum of its proper divisors (24502554).

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

20047446 is a wasteful number, since it uses less digits than its factorization.

20047446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371260 (or 371254 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 20047446 is about 4477.4374367488. The cubic root of 20047446 is about 271.6562392441.

The spelling of 20047446 in words is "twenty million, forty-seven thousand, four hundred forty-six".