20747467 has 8 divisors (see below), whose sum is σ = 22384880. Its totient is φ = 19116000.

The previous prime is 20747459. The next prime is 20747471. The reversal of 20747467 is 76474702.

It is a happy number.

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 20747467 - 2³ = 20747459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20747437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8092 + ... + 10342.

It is an arithmetic number, because the mean of its divisors is an integer number (2798110).

Almost surely, 2^20747467 is an apocalyptic number.

20747467 is a deficient number, since it is larger than the sum of its proper divisors (1637413).

20747467 is a wasteful number, since it uses less digits than its factorization.

20747467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 20747467 is about 4554.9387482161. The cubic root of 20747467 is about 274.7820510034.

It can be divided in two parts, 207 and 47467, that added together give a palindrome (47674).

The spelling of 20747467 in words is "twenty million, seven hundred forty-seven thousand, four hundred sixty-seven".