19961104 has 10 divisors (see below), whose sum is σ = 38674670. Its totient is φ = 9980544.

The previous prime is 19961101. The next prime is 19961107. The reversal of 19961104 is 40116991.

It is an interprime number because it is at equal distance from previous prime (19961101) and next prime (19961107).

It can be written as a sum of positive squares in only one way, i.e., 19784704 + 176400 = 4448^2 + 420^2 .

It is not an unprimeable number, because it can be changed into a prime (19961101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623769 + ... + 623800.

It is an arithmetic number, because the mean of its divisors is an integer number (3867467).

Almost surely, 2^19961104 is an apocalyptic number.

It is an amenable number.

19961104 is a deficient number, since it is larger than the sum of its proper divisors (18713566).

19961104 is a wasteful number, since it uses less digits than its factorization.

19961104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247577 (or 1247571 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 19961104 is about 4467.7851335981. The cubic root of 19961104 is about 271.2656808167.

The spelling of 19961104 in words is "nineteen million, nine hundred sixty-one thousand, one hundred four".