20049956 has 6 divisors (see below), whose sum is σ = 35087430. Its totient is φ = 10024976.

The previous prime is 20049937. The next prime is 20049971. The reversal of 20049956 is 65994002.

It can be written as a sum of positive squares in only one way, i.e., 14212900 + 5837056 = 3770^2 + 2416^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2506241 + ... + 2506248.

It is an arithmetic number, because the mean of its divisors is an integer number (5847905).

Almost surely, 2^20049956 is an apocalyptic number.

It is an amenable number.

20049956 is a deficient number, since it is larger than the sum of its proper divisors (15037474).

20049956 is a wasteful number, since it uses less digits than its factorization.

20049956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012493 (or 5012491 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 20049956 is about 4477.7177222331. The cubic root of 20049956 is about 271.6675761613.

The spelling of 20049956 in words is "twenty million, forty-nine thousand, nine hundred fifty-six".