19093940 has 12 divisors (see below), whose sum is σ = 40097316. Its totient is φ = 7637568.

The previous prime is 19093927. The next prime is 19093951. The reversal of 19093940 is 4939091.

It can be written as a sum of positive squares in 2 ways, for example, as 3189796 + 15904144 = 1786^2 + 3988^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19093940.

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, 477329 + ... + 477368.

It is an arithmetic number, because the mean of its divisors is an integer number (3341443).

Almost surely, 2^19093940 is an apocalyptic number.

19093940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19093940 is an abundant number, since it is smaller than the sum of its proper divisors (21003376).

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

19093940 is a wasteful number, since it uses less digits than its factorization.

19093940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954706 (or 954704 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 19093940 is about 4369.6613141066. The cubic root of 19093940 is about 267.2792133998.

The spelling of 19093940 in words is "nineteen million, ninety-three thousand, nine hundred forty".