19914028 has 24 divisors (see below), whose sum is σ = 36860544. Its totient is φ = 9398400.

The previous prime is 19914019. The next prime is 19914047. The reversal of 19914028 is 82041991.

It is a super-2 number, since 2×19914028² = 793137022369568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19913984 and 19914002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3126 + ... + 7042.

It is an arithmetic number, because the mean of its divisors is an integer number (1535856).

Almost surely, 2^19914028 is an apocalyptic number.

It is an amenable number.

19914028 is a deficient number, since it is larger than the sum of its proper divisors (16946516).

19914028 is a wasteful number, since it uses less digits than its factorization.

19914028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993 (or 3991 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 19914028 is about 4462.5136414357. The cubic root of 19914028 is about 271.0522631736.

The spelling of 19914028 in words is "nineteen million, nine hundred fourteen thousand, twenty-eight".