19402080 has 96 divisors (see below), whose sum is σ = 61979904. Its totient is φ = 5101056.

The previous prime is 19402079. The next prime is 19402121. The reversal of 19402080 is 8020491.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 19402080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39597 + ... + 40083.

It is an arithmetic number, because the mean of its divisors is an integer number (645624).

Almost surely, 2^19402080 is an apocalyptic number.

19402080 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 19402080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30989952).

19402080 is an abundant number, since it is smaller than the sum of its proper divisors (42577824).

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

19402080 is a wasteful number, since it uses less digits than its factorization.

19402080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 19402080 is about 4404.7792226172. The cubic root of 19402080 is about 268.7093408834.

The spelling of 19402080 in words is "nineteen million, four hundred two thousand, eighty".