20701047 has 8 divisors (see below), whose sum is σ = 27644544. Its totient is φ = 13779128.

The previous prime is 20701039. The next prime is 20701069. The reversal of 20701047 is 74010702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20701047 - 2³ = 20701039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20701027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3003 + ... + 7100.

It is an arithmetic number, because the mean of its divisors is an integer number (3455568).

Almost surely, 2^20701047 is an apocalyptic number.

20701047 is a deficient number, since it is larger than the sum of its proper divisors (6943497).

20701047 is a wasteful number, since it uses less digits than its factorization.

20701047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10789.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 20701047 is about 4549.8403268686. The cubic root of 20701047 is about 274.5769672128.

Adding to 20701047 its reverse (74010702), we get a palindrome (94711749).

The spelling of 20701047 in words is "twenty million, seven hundred one thousand, forty-seven".