19628040 has 32 divisors (see below), whose sum is σ = 58884480. Its totient is φ = 5234112.

The previous prime is 19628029. The next prime is 19628057. The reversal of 19628040 is 4082691.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 19627989 and 19628007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81664 + ... + 81903.

It is an arithmetic number, because the mean of its divisors is an integer number (1840140).

Almost surely, 2^19628040 is an apocalyptic number.

19628040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19628040 is an abundant number, since it is smaller than the sum of its proper divisors (39256440).

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

19628040 is a wasteful number, since it uses less digits than its factorization.

19628040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163581 (or 163577 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 19628040 is about 4430.3543876309. The cubic root of 19628040 is about 269.7484625805.

The spelling of 19628040 in words is "nineteen million, six hundred twenty-eight thousand, forty".