19955960 has 32 divisors (see below), whose sum is σ = 47543760. Its totient is φ = 7512576.

The previous prime is 19955951. The next prime is 19955963. The reversal of 19955960 is 6955991.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19955963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13994 + ... + 15353.

Almost surely, 2^19955960 is an apocalyptic number.

19955960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19955960 is an abundant number, since it is smaller than the sum of its proper divisors (27587800).

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

19955960 is a wasteful number, since it uses less digits than its factorization.

19955960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29375 (or 29371 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 19955960 is about 4467.2094197608. The cubic root of 19955960 is about 271.2423769864.

The spelling of 19955960 in words is "nineteen million, nine hundred fifty-five thousand, nine hundred sixty".