20050739 has 4 divisors (see below), whose sum is σ = 20066640. Its totient is φ = 20034840.

The previous prime is 20050727. The next prime is 20050741. The reversal of 20050739 is 93705002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20050739 is a prime.

It is a super-2 number, since 2×20050739² = 804064268892242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20050759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5879 + ... + 8640.

It is an arithmetic number, because the mean of its divisors is an integer number (5016660).

Almost surely, 2^20050739 is an apocalyptic number.

20050739 is a deficient number, since it is larger than the sum of its proper divisors (15901).

20050739 is a wasteful number, since it uses less digits than its factorization.

20050739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15900.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 20050739 is about 4477.8051543139. The cubic root of 20050739 is about 271.6711125439.

The spelling of 20050739 in words is "twenty million, fifty thousand, seven hundred thirty-nine".