19949120 has 56 divisors (see below), whose sum is σ = 49060608. Its totient is φ = 7718400.

The previous prime is 19949093. The next prime is 19949173. The reversal of 19949120 is 2194991.

It is a congruent number.

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, 8915 + ... + 10925.

Almost surely, 2^19949120 is an apocalyptic number.

19949120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19949120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24530304).

19949120 is an abundant number, since it is smaller than the sum of its proper divisors (29111488).

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

19949120 is a wasteful number, since it uses less digits than its factorization.

19949120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 19949120 is about 4466.4437755333. The cubic root of 19949120 is about 271.2113835744.

The spelling of 19949120 in words is "nineteen million, nine hundred forty-nine thousand, one hundred twenty".