19426900 has 18 divisors (see below), whose sum is σ = 42156590. Its totient is φ = 7770720.

The previous prime is 19426889. The next prime is 19426921. The reversal of 19426900 is 962491.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 31684 + 19395216 = 178^2 + 4404^2 .

It is a super-2 number, since 2×19426900² = 754808887220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97035 + ... + 97234.

Almost surely, 2^19426900 is an apocalyptic number.

19426900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19426900 is an abundant number, since it is smaller than the sum of its proper divisors (22729690).

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

19426900 is a wasteful number, since it uses less digits than its factorization.

19426900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194283 (or 194276 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 19426900 is about 4407.5957164876. The cubic root of 19426900 is about 268.8238736886.

The spelling of 19426900 in words is "nineteen million, four hundred twenty-six thousand, nine hundred".