19827090 has 24 divisors (see below), whose sum is σ = 51550668. Its totient is φ = 5287200.

The previous prime is 19827061. The next prime is 19827103. The reversal of 19827090 is 9072891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19793601 + 33489 = 4449^2 + 183^2 .

It is a super-2 number, since 2×19827090² = 786226995736200, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 110061 + ... + 110240.

Almost surely, 2^19827090 is an apocalyptic number.

19827090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19827090 is an abundant number, since it is smaller than the sum of its proper divisors (31723578).

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

19827090 is a wasteful number, since it uses less digits than its factorization.

19827090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220314 (or 220311 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 19827090 is about 4452.7620641575. The cubic root of 19827090 is about 270.6572465384.

The spelling of 19827090 in words is "nineteen million, eight hundred twenty-seven thousand, ninety".