8020047 has 16 divisors (see below), whose sum is σ = 12430080. Its totient is φ = 4504512.

The previous prime is 8020043. The next prime is 8020049. The reversal of 8020047 is 7400208.

It is a happy number.

8020047 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8020047 - 2² = 8020043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8020043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1998 + ... + 4475.

It is an arithmetic number, because the mean of its divisors is an integer number (776880).

Almost surely, 2^8020047 is an apocalyptic number.

8020047 is a deficient number, since it is larger than the sum of its proper divisors (4410033).

8020047 is a wasteful number, since it uses less digits than its factorization.

8020047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6542.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 8020047 is about 2831.9687498276. The cubic root of 8020047 is about 200.1669189848.

It can be divided in two parts, 802004 and 7, that added together give a triangular number (802011 = T₁₂₆₆).

The spelling of 8020047 in words is "eight million, twenty thousand, forty-seven".