19069940 has 12 divisors (see below), whose sum is σ = 40046916. Its totient is φ = 7627968.

The previous prime is 19069933. The next prime is 19069943. The reversal of 19069940 is 4996091.

It can be written as a sum of positive squares in 2 ways, for example, as 5216656 + 13853284 = 2284^2 + 3722^2 .

It is a super-2 number, since 2×19069940² = 727325223207200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19069894 and 19069903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19069943) 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, 476729 + ... + 476768.

It is an arithmetic number, because the mean of its divisors is an integer number (3337243).

Almost surely, 2^19069940 is an apocalyptic number.

19069940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19069940 is an abundant number, since it is smaller than the sum of its proper divisors (20976976).

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

19069940 is a wasteful number, since it uses less digits than its factorization.

19069940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953506 (or 953504 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 19069940 is about 4366.9142423455. The cubic root of 19069940 is about 267.1671815084.

The spelling of 19069940 in words is "nineteen million, sixty-nine thousand, nine hundred forty".