146228736 has 160 divisors (see below), whose sum is σ = 417973248. Its totient is φ = 45342720.

The previous prime is 146228723. The next prime is 146228737. The reversal of 146228736 is 637822641.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 146228694 and 146228703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146228737) 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, 1761751 + ... + 1761833.

Almost surely, 2^146228736 is an apocalyptic number.

146228736 is a gapful number since it is divisible by the number (16) 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 146228736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208986624).

146228736 is an abundant number, since it is smaller than the sum of its proper divisors (271744512).

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

146228736 is an equidigital number, since it uses as much as digits as its factorization.

146228736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 156 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 146228736 is about 12092.5074322905. The cubic root of 146228736 is about 526.8385858301.

The spelling of 146228736 in words is "one hundred forty-six million, two hundred twenty-eight thousand, seven hundred thirty-six".