19768090 has 8 divisors (see below), whose sum is σ = 35582580. Its totient is φ = 7907232.

The previous prime is 19768061. The next prime is 19768103. The reversal of 19768090 is 9086791.

It can be written as a sum of positive squares in 2 ways, for example, as 19158129 + 609961 = 4377^2 + 781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988395 + ... + 988414.

Almost surely, 2^19768090 is an apocalyptic number.

19768090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19768090 is a deficient number, since it is larger than the sum of its proper divisors (15814490).

19768090 is a wasteful number, since it uses less digits than its factorization.

19768090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976816.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 19768090 is about 4446.1320268296. The cubic root of 19768090 is about 270.3885124755.

The spelling of 19768090 in words is "nineteen million, seven hundred sixty-eight thousand, ninety".