20464347 has 8 divisors (see below), whose sum is σ = 27449856. Its totient is φ = 13560872.

The previous prime is 20464337. The next prime is 20464351. The reversal of 20464347 is 74346402.

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 20464347 - 2⁴ = 20464331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20464337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19923 + ... + 20924.

It is an arithmetic number, because the mean of its divisors is an integer number (3431232).

Almost surely, 2^20464347 is an apocalyptic number.

20464347 is a deficient number, since it is larger than the sum of its proper divisors (6985509).

20464347 is a wasteful number, since it uses less digits than its factorization.

20464347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41017.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 20464347 is about 4523.7536405070. The cubic root of 20464347 is about 273.5264299172.

The spelling of 20464347 in words is "twenty million, four hundred sixty-four thousand, three hundred forty-seven".