19740454 has 8 divisors (see below), whose sum is σ = 30096288. Its totient is φ = 9708360.

The previous prime is 19740431. The next prime is 19740473. The reversal of 19740454 is 45404791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19740454² = 779371048252232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80782 + ... + 81025.

It is an arithmetic number, because the mean of its divisors is an integer number (3762036).

Almost surely, 2^19740454 is an apocalyptic number.

19740454 is a deficient number, since it is larger than the sum of its proper divisors (10355834).

19740454 is a wasteful number, since it uses less digits than its factorization.

19740454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161870.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 19740454 is about 4443.0230699379. The cubic root of 19740454 is about 270.2624517073.

The spelling of 19740454 in words is "nineteen million, seven hundred forty thousand, four hundred fifty-four".