19966132 has 12 divisors (see below), whose sum is σ = 35021700. Its totient is φ = 9959936.

The previous prime is 19966129. The next prime is 19966183. The reversal of 19966132 is 23166991.

It can be written as a sum of positive squares in 2 ways, for example, as 6687396 + 13278736 = 2586^2 + 3644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19966091 and 19966100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3763 + ... + 7354.

It is an arithmetic number, because the mean of its divisors is an integer number (2918475).

Almost surely, 2^19966132 is an apocalyptic number.

It is an amenable number.

19966132 is a deficient number, since it is larger than the sum of its proper divisors (15055568).

19966132 is a wasteful number, since it uses less digits than its factorization.

19966132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11570 (or 11568 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 19966132 is about 4468.3477930886. The cubic root of 19966132 is about 271.2884552642.

It can be divided in two parts, 1996 and 6132, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 19966132 in words is "nineteen million, nine hundred sixty-six thousand, one hundred thirty-two".