2293732728 has 480 divisors, whose sum is σ = 8044660800. Its totient is φ = 607606272.

The previous prime is 2293732723. The next prime is 2293732729. The reversal of 2293732728 is 8272373922.

2293732728 is a `hidden beast` number, since 2 + 2 + 9 + 373 + 272 + 8 = 666.

2293732728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2293732728² = 10522419654996643968, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2293732723) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 43277950 + ... + 43278002.

It is an arithmetic number, because the mean of its divisors is an integer number (16759710).

Almost surely, 2^2293732728 is an apocalyptic number.

2293732728 is a gapful number since it is divisible by the number (28) 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 2293732728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4022330400).

2293732728 is an abundant number, since it is smaller than the sum of its proper divisors (5750928072).

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

2293732728 is a wasteful number, since it uses less digits than its factorization.

2293732728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 141 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 2293732728 is about 47892.9298331184. The cubic root of 2293732728 is about 1318.8060691838.

The spelling of 2293732728 in words is "two billion, two hundred ninety-three million, seven hundred thirty-two thousand, seven hundred twenty-eight".