19982928 has 40 divisors (see below), whose sum is σ = 58998208. Its totient is φ = 5709312.

The previous prime is 19982899. The next prime is 19982933. The reversal of 19982928 is 82928991.

It is a super-2 number, since 2×19982928² = 798634822906368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 29401 + ... + 30072.

Almost surely, 2^19982928 is an apocalyptic number.

It is an amenable number.

19982928 is an abundant number, since it is smaller than the sum of its proper divisors (39015280).

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

19982928 is a wasteful number, since it uses less digits than its factorization.

19982928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59491 (or 59485 counting only the distinct ones).

The product of its digits is 186624, while the sum is 48.

The square root of 19982928 is about 4470.2268398818. The cubic root of 19982928 is about 271.3645054441.

It can be divided in two parts, 19982 and 928, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 19982928 in words is "nineteen million, nine hundred eighty-two thousand, nine hundred twenty-eight".