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20101232232 = 2332319187491
BaseRepresentation
bin10010101110001000…
…000111011001101000
31220212220000101202200
4102232020013121220
5312131403412412
613122343100200
71311061440414
oct225610073150
956786011680
1020101232232
118585692324
123a8ba41660
131b84660273
14d89917d44
157c9ab59dc
hex4ae207668

20101232232 has 48 divisors (see below), whose sum is σ = 54458520480. Its totient is φ = 6698234400.

The previous prime is 20101232147. The next prime is 20101232233. The reversal of 20101232232 is 23223210102.

20101232232 is a `hidden beast` number, since 201 + 0 + 1 + 232 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20101232233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186007 + ... + 273497.

It is an arithmetic number, because the mean of its divisors is an integer number (1134552510).

Almost surely, 220101232232 is an apocalyptic number.

It is an amenable number.

20101232232 is an abundant number, since it is smaller than the sum of its proper divisors (34357288248).

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

20101232232 is a wasteful number, since it uses less digits than its factorization.

20101232232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90694 (or 90687 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20101232232 its reverse (23223210102), we get a palindrome (43324442334).

The spelling of 20101232232 in words is "twenty billion, one hundred one million, two hundred thirty-two thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 3191 6382 9573 12764 19146 25528 28719 38292 57438 76584 87491 114876 174982 229752 262473 349964 524946 699928 787419 1049892 1574838 2099784 3149676 6299352 279183781 558367562 837551343 1116735124 1675102686 2233470248 2512654029 3350205372 5025308058 6700410744 10050616116 20101232232