19428910 has 8 divisors (see below), whose sum is σ = 34972056. Its totient is φ = 7771560.

The previous prime is 19428901. The next prime is 19428917. The reversal of 19428910 is 1982491.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971436 + ... + 971455.

It is an arithmetic number, because the mean of its divisors is an integer number (4371507).

Almost surely, 2^19428910 is an apocalyptic number.

19428910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19428910 is a deficient number, since it is larger than the sum of its proper divisors (15543146).

19428910 is a wasteful number, since it uses less digits than its factorization.

19428910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942898.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 19428910 is about 4407.8237260580. The cubic root of 19428910 is about 268.8331446368.

The spelling of 19428910 in words is "nineteen million, four hundred twenty-eight thousand, nine hundred ten".