19973492 has 24 divisors (see below), whose sum is σ = 43579200. Its totient is φ = 7781760.

The previous prime is 19973483. The next prime is 19973497. The reversal of 19973492 is 29437991.

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 Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19973497) by changing a digit.

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, 32117 + ... + 32732.

It is an arithmetic number, because the mean of its divisors is an integer number (1815800).

Almost surely, 2^19973492 is an apocalyptic number.

It is an amenable number.

19973492 is an abundant number, since it is smaller than the sum of its proper divisors (23605708).

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

19973492 is a wasteful number, since it uses less digits than its factorization.

19973492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64871 (or 64869 counting only the distinct ones).

The product of its digits is 122472, while the sum is 44.

The square root of 19973492 is about 4469.1712878340. The cubic root of 19973492 is about 271.3217856682.

The spelling of 19973492 in words is "nineteen million, nine hundred seventy-three thousand, four hundred ninety-two".