19195040 has 48 divisors (see below), whose sum is σ = 48022632. Its totient is φ = 7225344.

The previous prime is 19195019. The next prime is 19195049. The reversal of 19195040 is 4059191.

It can be written as a sum of positive squares in 4 ways, for example, as 19114384 + 80656 = 4372^2 + 284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19194994 and 19195012.

It is not an unprimeable number, because it can be changed into a prime (19195049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809 + ... + 6248.

Almost surely, 2^19195040 is an apocalyptic number.

19195040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19195040 is an abundant number, since it is smaller than the sum of its proper divisors (28827592).

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

19195040 is a wasteful number, since it uses less digits than its factorization.

19195040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089 (or 7081 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 19195040 is about 4381.2144435076. The cubic root of 19195040 is about 267.7501198010.

The spelling of 19195040 in words is "nineteen million, one hundred ninety-five thousand, forty".