19961376 has 24 divisors (see below), whose sum is σ = 52398864. Its totient is φ = 6653760.

The previous prime is 19961371. The next prime is 19961393. The reversal of 19961376 is 67316991.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (19961371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103870 + ... + 104061.

It is an arithmetic number, because the mean of its divisors is an integer number (2183286).

Almost surely, 2^19961376 is an apocalyptic number.

19961376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19961376 is an abundant number, since it is smaller than the sum of its proper divisors (32437488).

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

19961376 is a wasteful number, since it uses less digits than its factorization.

19961376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207944 (or 207936 counting only the distinct ones).

The product of its digits is 61236, while the sum is 42.

The square root of 19961376 is about 4467.8155736333. The cubic root of 19961376 is about 271.2669129452.

The spelling of 19961376 in words is "nineteen million, nine hundred sixty-one thousand, three hundred seventy-six".