16307090820 has 144 divisors (see below), whose sum is σ = 50091350400. Its totient is φ = 4293831168.

The previous prime is 16307090801. The next prime is 16307090881. The reversal of 16307090820 is 2809070361.

It is a super-2 number, since 2×16307090820² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4905679 + ... + 4909001.

It is an arithmetic number, because the mean of its divisors is an integer number (347856600).

Almost surely, 2^16307090820 is an apocalyptic number.

16307090820 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 16307090820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25045675200).

16307090820 is an abundant number, since it is smaller than the sum of its proper divisors (33784259580).

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

16307090820 is a wasteful number, since it uses less digits than its factorization.

16307090820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674 (or 3669 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 16307090820 in words is "sixteen billion, three hundred seven million, ninety thousand, eight hundred twenty".