20299410 has 80 divisors (see below), whose sum is σ = 57499200. Its totient is φ = 5124384.

The previous prime is 20299399. The next prime is 20299417. The reversal of 20299410 is 1499202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20299417) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14731 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (718740).

Almost surely, 2^20299410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20299410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28749600).

20299410 is an abundant number, since it is smaller than the sum of its proper divisors (37199790).

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

20299410 is a wasteful number, since it uses less digits than its factorization.

20299410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 20299410 is about 4505.4866551794. The cubic root of 20299410 is about 272.7895975743.

The spelling of 20299410 in words is "twenty million, two hundred ninety-nine thousand, four hundred ten".