140613228 has 144 divisors (see below), whose sum is σ = 427714560. Its totient is φ = 38102400.

The previous prime is 140613227. The next prime is 140613229. The reversal of 140613228 is 822316041.

140613228 is a `hidden beast` number, since 1 + 40 + 613 + 2 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (140613227) and next prime (140613229).

It is not an unprimeable number, because it can be changed into a prime (140613223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518733 + ... + 519003.

It is an arithmetic number, because the mean of its divisors is an integer number (2970240).

Almost surely, 2^140613228 is an apocalyptic number.

140613228 is a gapful number since it is divisible by the number (18) 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 140613228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213857280).

140613228 is an abundant number, since it is smaller than the sum of its proper divisors (287101332).

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

140613228 is a wasteful number, since it uses less digits than its factorization.

140613228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 140613228 is about 11858.0448641418. The cubic root of 140613228 is about 520.0064446933.

Adding to 140613228 its reverse (822316041), we get a palindrome (962929269).

The spelling of 140613228 in words is "one hundred forty million, six hundred thirteen thousand, two hundred twenty-eight".