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140230554 = 2323371759
BaseRepresentation
bin10000101101110…
…11111110011010
3100202212110011020
420112323332122
5241344334204
621525343310
73321640302
oct1026737632
9322773136
10140230554
117217a322
123ab67b36
132308b279
14148a4602
15c49ebd9
hex85bbf9a

140230554 has 8 divisors (see below), whose sum is σ = 280461120. Its totient is φ = 46743516.

The previous prime is 140230553. The next prime is 140230579. The reversal of 140230554 is 455032041.

It is a sphenic number, since it is the product of 3 distinct primes.

140230554 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (140230553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11685874 + ... + 11685885.

It is an arithmetic number, because the mean of its divisors is an integer number (35057640).

Almost surely, 2140230554 is an apocalyptic number.

140230554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140230554 is a wasteful number, since it uses less digits than its factorization.

140230554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23371764.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 140230554 is about 11841.8982431028. The cubic root of 140230554 is about 519.5342896433.

Adding to 140230554 its reverse (455032041), we get a palindrome (595262595).

The spelling of 140230554 in words is "one hundred forty million, two hundred thirty thousand, five hundred fifty-four".

Divisors: 1 2 3 6 23371759 46743518 70115277 140230554