19022040 has 192 divisors, whose sum is σ = 68140800. Its totient is φ = 4758912.

The previous prime is 19022009. The next prime is 19022041. The reversal of 19022040 is 4022091.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19022041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184629 + ... + 184731.

It is an arithmetic number, because the mean of its divisors is an integer number (354900).

Almost surely, 2^19022040 is an apocalyptic number.

19022040 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 19022040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34070400).

19022040 is an abundant number, since it is smaller than the sum of its proper divisors (49118760).

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

19022040 is a wasteful number, since it uses less digits than its factorization.

19022040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 19022040 is about 4361.4263721861. The cubic root of 19022040 is about 266.9433031994.

The spelling of 19022040 in words is "nineteen million, twenty-two thousand, forty".