19857468 has 12 divisors (see below), whose sum is σ = 46334120. Its totient is φ = 6619152.

The previous prime is 19857437. The next prime is 19857491. The reversal of 19857468 is 86475891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827383 + ... + 827406.

Almost surely, 2^19857468 is an apocalyptic number.

It is an amenable number.

19857468 is an abundant number, since it is smaller than the sum of its proper divisors (26476652).

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

19857468 is a wasteful number, since it uses less digits than its factorization.

19857468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654796 (or 1654794 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 19857468 is about 4456.1718997364. The cubic root of 19857468 is about 270.7954048240.

It can be divided in two parts, 1985 and 7468, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 19857468 in words is "nineteen million, eight hundred fifty-seven thousand, four hundred sixty-eight".