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100445357 = 2917320021
BaseRepresentation
bin1011111110010…
…10110010101101
321000000011010102
411333022302231
5201203222412
613544520445
72326525415
oct577126255
9230004112
10100445357
11517760a1
1229780125
1317a6b42c
14d4a9645
158c418c2
hex5fcacad

100445357 has 8 divisors (see below), whose sum is σ = 104514840. Its totient is φ = 96416320.

The previous prime is 100445339. The next prime is 100445369. The reversal of 100445357 is 753544001.

It can be written as a sum of positive squares in 4 ways, for example, as 12292036 + 88153321 = 3506^2 + 9389^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100445357 - 224 = 83668141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100445057) 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 7 ways as a sum of consecutive naturals, for example, 4994 + ... + 15027.

It is an arithmetic number, because the mean of its divisors is an integer number (13064355).

Almost surely, 2100445357 is an apocalyptic number.

It is an amenable number.

100445357 is a deficient number, since it is larger than the sum of its proper divisors (4069483).

100445357 is a wasteful number, since it uses less digits than its factorization.

100445357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 100445357 is about 10022.2431121980. The cubic root of 100445357 is about 464.8469176597.

Adding to 100445357 its reverse (753544001), we get a palindrome (853989358).

The spelling of 100445357 in words is "one hundred million, four hundred forty-five thousand, three hundred fifty-seven".

Divisors: 1 29 173 5017 20021 580609 3463633 100445357