19007140 has 12 divisors (see below), whose sum is σ = 39915036. Its totient is φ = 7602848.

The previous prime is 19007119. The next prime is 19007147. The reversal of 19007140 is 4170091.

It can be written as a sum of positive squares in 2 ways, for example, as 14546596 + 4460544 = 3814^2 + 2112^2 .

It is a super-2 number, since 2×19007140² = 722542741959200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19007147) 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, 475159 + ... + 475198.

It is an arithmetic number, because the mean of its divisors is an integer number (3326253).

Almost surely, 2^19007140 is an apocalyptic number.

19007140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19007140 is an abundant number, since it is smaller than the sum of its proper divisors (20907896).

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

19007140 is a wasteful number, since it uses less digits than its factorization.

19007140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950366 (or 950364 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 19007140 is about 4359.7178807808. The cubic root of 19007140 is about 266.8735859278.

The spelling of 19007140 in words is "nineteen million, seven thousand, one hundred forty".