20199480 has 128 divisors (see below), whose sum is σ = 70156800. Its totient is φ = 4557312.

The previous prime is 20199437. The next prime is 20199481. The reversal of 20199480 is 8499102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20199481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116674 + ... + 116846.

It is an arithmetic number, because the mean of its divisors is an integer number (548100).

Almost surely, 2^20199480 is an apocalyptic number.

20199480 is a gapful number since it is divisible by the number (20) 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 20199480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35078400).

20199480 is an abundant number, since it is smaller than the sum of its proper divisors (49957320).

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

20199480 is a wasteful number, since it uses less digits than its factorization.

20199480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 20199480 is about 4494.3831612358. The cubic root of 20199480 is about 272.3412311953.

It can be divided in two parts, 201 and 99480, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 20199480 in words is "twenty million, one hundred ninety-nine thousand, four hundred eighty".