20964271 has 8 divisors (see below), whose sum is σ = 21233664. Its totient is φ = 20696760.

The previous prime is 20964269. The next prime is 20964283. The reversal of 20964271 is 17246902.

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 20964271 - 2¹ = 20964269 is a prime.

It is a super-2 number, since 2×20964271² = 879001317122882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20964221) 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, 48426 + ... + 48856.

It is an arithmetic number, because the mean of its divisors is an integer number (2654208).

Almost surely, 2^20964271 is an apocalyptic number.

20964271 is a deficient number, since it is larger than the sum of its proper divisors (269393).

20964271 is a wasteful number, since it uses less digits than its factorization.

20964271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20964271 is about 4578.6756818976. The cubic root of 20964271 is about 275.7358627833.

The spelling of 20964271 in words is "twenty million, nine hundred sixty-four thousand, two hundred seventy-one".