20077047 has 6 divisors (see below), whose sum is σ = 29000192. Its totient is φ = 13384692.

The previous prime is 20077033. The next prime is 20077067. The reversal of 20077047 is 74077002.

It is a happy number.

It is not a de Polignac number, because 20077047 - 2⁷ = 20076919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20077047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20077027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115383 + ... + 1115400.

Almost surely, 2^20077047 is an apocalyptic number.

20077047 is a deficient number, since it is larger than the sum of its proper divisors (8923145).

20077047 is a wasteful number, since it uses less digits than its factorization.

20077047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230789 (or 2230786 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20077047 is about 4480.7417912663. The cubic root of 20077047 is about 271.7898779097.

The spelling of 20077047 in words is "twenty million, seventy-seven thousand, forty-seven".