19422040 has 64 divisors (see below), whose sum is σ = 49001760. Its totient is φ = 6865920.

The previous prime is 19422031. The next prime is 19422049. The reversal of 19422040 is 4022491.

It is an interprime number because it is at equal distance from previous prime (19422031) and next prime (19422049).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19422049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15684 + ... + 16876.

Almost surely, 2^19422040 is an apocalyptic number.

19422040 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 19422040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24500880).

19422040 is an abundant number, since it is smaller than the sum of its proper divisors (29579720).

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

19422040 is a wasteful number, since it uses less digits than its factorization.

19422040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 19422040 is about 4407.0443610202. The cubic root of 19422040 is about 268.8014547233.

The spelling of 19422040 in words is "nineteen million, four hundred twenty-two thousand, forty".