19045740 has 96 divisors (see below), whose sum is σ = 61576704. Its totient is φ = 4308480.

The previous prime is 19045723. The next prime is 19045751. The reversal of 19045740 is 4754091.

19045740 = T₁₆₀ + T₁₆₁ + ... + T₄₉₀.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 19045698 and 19045707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57375 + ... + 57705.

It is an arithmetic number, because the mean of its divisors is an integer number (641424).

Almost surely, 2^19045740 is an apocalyptic number.

19045740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19045740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30788352).

19045740 is an abundant number, since it is smaller than the sum of its proper divisors (42530964).

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

19045740 is a wasteful number, since it uses less digits than its factorization.

19045740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 19045740 is about 4364.1425274617. The cubic root of 19045740 is about 267.0541208025.

The spelling of 19045740 in words is "nineteen million, forty-five thousand, seven hundred forty".