19763982 has 48 divisors (see below), whose sum is σ = 49226112. Its totient is φ = 5613840.

The previous prime is 19763977. The next prime is 19763987. The reversal of 19763982 is 28936791.

19763982 is a `hidden beast` number, since 1 + 9 + 7 + 639 + 8 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (19763977) and next prime (19763987).

It is a super-2 number, since 2×19763982² = 781229968992648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19763987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28257 + ... + 28947.

It is an arithmetic number, because the mean of its divisors is an integer number (1025544).

Almost surely, 2^19763982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19763982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24613056).

19763982 is an abundant number, since it is smaller than the sum of its proper divisors (29462130).

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

19763982 is a wasteful number, since it uses less digits than its factorization.

19763982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 930 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 19763982 is about 4445.6700282410. The cubic root of 19763982 is about 270.3697813966.

The spelling of 19763982 in words is "nineteen million, seven hundred sixty-three thousand, nine hundred eighty-two".