19598040 has 288 divisors, whose sum is σ = 81628560. Its totient is φ = 4032000.

The previous prime is 19598039. The next prime is 19598069. The reversal of 19598040 is 4089591.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 19597986 and 19598004.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 193990 + ... + 194090.

Almost surely, 2^19598040 is an apocalyptic number.

19598040 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 19598040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40814280).

19598040 is an abundant number, since it is smaller than the sum of its proper divisors (62030520).

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

19598040 is a wasteful number, since it uses less digits than its factorization.

19598040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 19598040 is about 4426.9673592653. The cubic root of 19598040 is about 269.6109623463.

It can be divided in two parts, 1959 and 8040, that added together give a palindrome (9999).

The spelling of 19598040 in words is "nineteen million, five hundred ninety-eight thousand, forty".