19676940 has 96 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 4972800.

The previous prime is 19676897. The next prime is 19676941. The reversal of 19676940 is 4967691.

It is a junction number, because it is equal to n+sod(n) for n = 19676892 and 19676901.

It is not an unprimeable number, because it can be changed into a prime (19676941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131986 + ... + 132134.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 2^19676940 is an apocalyptic number.

19676940 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 19676940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29030400).

19676940 is an abundant number, since it is smaller than the sum of its proper divisors (38383860).

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

19676940 is a wasteful number, since it uses less digits than its factorization.

19676940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 19676940 is about 4435.8697005210. The cubic root of 19676940 is about 269.9722879651.

The spelling of 19676940 in words is "nineteen million, six hundred seventy-six thousand, nine hundred forty".