19361020 has 48 divisors (see below), whose sum is σ = 47613888. Its totient is φ = 6474240.

The previous prime is 19360997. The next prime is 19361029. The reversal of 19361020 is 2016391.

It is a junction number, because it is equal to n+sod(n) for n = 19360982 and 19361000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19361029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4054 + ... + 7426.

It is an arithmetic number, because the mean of its divisors is an integer number (991956).

Almost surely, 2^19361020 is an apocalyptic number.

19361020 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 19361020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23806944).

19361020 is an abundant number, since it is smaller than the sum of its proper divisors (28252868).

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

19361020 is a wasteful number, since it uses less digits than its factorization.

19361020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430 (or 3428 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 19361020 is about 4400.1159075643. The cubic root of 19361020 is about 268.5196533555.

The spelling of 19361020 in words is "nineteen million, three hundred sixty-one thousand, twenty".