19085340 has 48 divisors (see below), whose sum is σ = 54889632. Its totient is φ = 4951296.

The previous prime is 19085327. The next prime is 19085357. The reversal of 19085340 is 4358091.

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 = 19085298 and 19085307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2079 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (1143534).

Almost surely, 2^19085340 is an apocalyptic number.

19085340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19085340 is an abundant number, since it is smaller than the sum of its proper divisors (35804292).

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

19085340 is a wasteful number, since it uses less digits than its factorization.

19085340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646 (or 8644 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 19085340 is about 4368.6771453153. The cubic root of 19085340 is about 267.2390794372.

The spelling of 19085340 in words is "nineteen million, eighty-five thousand, three hundred forty".