19428374 has 16 divisors (see below), whose sum is σ = 35059200. Its totient is φ = 7888104.

The previous prime is 19428373. The next prime is 19428377. The reversal of 19428374 is 47382491.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428371) 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, 36254 + ... + 36785.

It is an arithmetic number, because the mean of its divisors is an integer number (2191200).

Almost surely, 2^19428374 is an apocalyptic number.

19428374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19428374 is a deficient number, since it is larger than the sum of its proper divisors (15630826).

19428374 is a wasteful number, since it uses less digits than its factorization.

19428374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73067.

The product of its digits is 48384, while the sum is 38.

The square root of 19428374 is about 4407.7629246592. The cubic root of 19428374 is about 268.8306724465.

The spelling of 19428374 in words is "nineteen million, four hundred twenty-eight thousand, three hundred seventy-four".