20193471 has 12 divisors (see below), whose sum is σ = 30436848. Its totient is φ = 12876864.

The previous prime is 20193469. The next prime is 20193521. The reversal of 20193471 is 17439102.

20193471 is a `hidden beast` number, since 2 + 0 + 193 + 471 = 666.

It is not a de Polignac number, because 20193471 - 2¹ = 20193469 is a prime.

It is a super-3 number, since 3×20193471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20193421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48570 + ... + 48983.

It is an arithmetic number, because the mean of its divisors is an integer number (2536404).

Almost surely, 2^20193471 is an apocalyptic number.

20193471 is a deficient number, since it is larger than the sum of its proper divisors (10243377).

20193471 is a wasteful number, since it uses less digits than its factorization.

20193471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97582 (or 97579 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20193471 is about 4493.7146104309. The cubic root of 20193471 is about 272.3142228967.

The spelling of 20193471 in words is "twenty million, one hundred ninety-three thousand, four hundred seventy-one".