19990276 has 6 divisors (see below), whose sum is σ = 34982990. Its totient is φ = 9995136.

The previous prime is 19990253. The next prime is 19990279. The reversal of 19990276 is 67209991.

It can be written as a sum of positive squares in only one way, i.e., 19713600 + 276676 = 4440^2 + 526^2 .

It is a super-2 number, since 2×19990276² = 799222269112352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19990279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498781 + ... + 2498788.

Almost surely, 2^19990276 is an apocalyptic number.

It is an amenable number.

19990276 is a deficient number, since it is larger than the sum of its proper divisors (14992714).

19990276 is a wasteful number, since it uses less digits than its factorization.

19990276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997573 (or 4997571 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 19990276 is about 4471.0486465705. The cubic root of 19990276 is about 271.3977628665.

The spelling of 19990276 in words is "nineteen million, nine hundred ninety thousand, two hundred seventy-six".