19210972 has 24 divisors (see below), whose sum is σ = 37184112. Its totient is φ = 8611200.

The previous prime is 19210949. The next prime is 19210987. The reversal of 19210972 is 27901291.

It is a super-2 number, since 2×19210972² = 738122890369568, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222 + ... + 6202.

It is an arithmetic number, because the mean of its divisors is an integer number (1549338).

Almost surely, 2^19210972 is an apocalyptic number.

It is an amenable number.

19210972 is a deficient number, since it is larger than the sum of its proper divisors (17973140).

19210972 is a wasteful number, since it uses less digits than its factorization.

19210972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069 (or 6067 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 19210972 is about 4383.0322837050. The cubic root of 19210972 is about 267.8241773915.

The spelling of 19210972 in words is "nineteen million, two hundred ten thousand, nine hundred seventy-two".