20193456 has 40 divisors (see below), whose sum is σ = 53282304. Its totient is φ = 6587200.

The previous prime is 20193451. The next prime is 20193463. The reversal of 20193456 is 65439102.

It is not an unprimeable number, because it can be changed into a prime (20193451) 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, 2220 + ... + 6731.

Almost surely, 2^20193456 is an apocalyptic number.

It is an amenable number.

20193456 is an abundant number, since it is smaller than the sum of its proper divisors (33088848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20193456 is a wasteful number, since it uses less digits than its factorization.

20193456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9009 (or 9003 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20193456 is about 4493.7129414327. The cubic root of 20193456 is about 272.3141554704.

The spelling of 20193456 in words is "twenty million, one hundred ninety-three thousand, four hundred fifty-six".