19872669 has 8 divisors (see below), whose sum is σ = 26892640. Its totient is φ = 13050576.

The previous prime is 19872661. The next prime is 19872673. The reversal of 19872669 is 96627891.

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

It is not a de Polignac number, because 19872669 - 2³ = 19872661 is a prime.

It is a super-2 number, since 2×19872669² = 789845946367122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19872661) 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, 49234 + ... + 49635.

It is an arithmetic number, because the mean of its divisors is an integer number (3361580).

Almost surely, 2^19872669 is an apocalyptic number.

It is an amenable number.

19872669 is a deficient number, since it is larger than the sum of its proper divisors (7019971).

19872669 is an equidigital number, since it uses as much as digits as its factorization.

19872669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98939.

The product of its digits is 326592, while the sum is 48.

The square root of 19872669 is about 4457.8771853877. The cubic root of 19872669 is about 270.8644856526.

It can be divided in two parts, 1987 and 2669, that added together give a triangular number (4656 = T₉₆).

The spelling of 19872669 in words is "nineteen million, eight hundred seventy-two thousand, six hundred sixty-nine".