19055240 has 16 divisors (see below), whose sum is σ = 42874380. Its totient is φ = 7622080.

The previous prime is 19055237. The next prime is 19055243. The reversal of 19055240 is 4255091.

It is an interprime number because it is at equal distance from previous prime (19055237) and next prime (19055243).

It can be written as a sum of positive squares in 2 ways, for example, as 17522596 + 1532644 = 4186^2 + 1238^2 .

It is not an unprimeable number, because it can be changed into a prime (19055243) 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, 238151 + ... + 238230.

Almost surely, 2^19055240 is an apocalyptic number.

19055240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19055240 is an abundant number, since it is smaller than the sum of its proper divisors (23819140).

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

19055240 is a wasteful number, since it uses less digits than its factorization.

19055240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476392 (or 476388 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 19055240 is about 4365.2308071853. The cubic root of 19055240 is about 267.0985155498.

The spelling of 19055240 in words is "nineteen million, fifty-five thousand, two hundred forty".