20193401 has 4 divisors (see below), whose sum is σ = 20217204. Its totient is φ = 20169600.

The previous prime is 20193347. The next prime is 20193419. The reversal of 20193401 is 10439102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6325225 + 13868176 = 2515^2 + 3724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20193401 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 10580 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (5054301).

Almost surely, 2^20193401 is an apocalyptic number.

It is an amenable number.

20193401 is a deficient number, since it is larger than the sum of its proper divisors (23803).

20193401 is an equidigital number, since it uses as much as digits as its factorization.

20193401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23802.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 20193401 is about 4493.7068217675. The cubic root of 20193401 is about 272.3139082403.

The spelling of 20193401 in words is "twenty million, one hundred ninety-three thousand, four hundred one".