19213628 has 12 divisors (see below), whose sum is σ = 38427312. Its totient is φ = 8234400.

The previous prime is 19213627. The next prime is 19213637. The reversal of 19213628 is 82631291.

19213628 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19213594 and 19213603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19213627) 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, 343073 + ... + 343128.

It is an arithmetic number, because the mean of its divisors is an integer number (3202276).

Almost surely, 2^19213628 is an apocalyptic number.

It is an amenable number.

19213628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19213628 is a wasteful number, since it uses less digits than its factorization.

19213628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686212 (or 686210 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 19213628 is about 4383.3352598221. The cubic root of 19213628 is about 267.8365194399.

The spelling of 19213628 in words is "nineteen million, two hundred thirteen thousand, six hundred twenty-eight".