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126630907 = 1329383877
BaseRepresentation
bin1111000110000…
…11101111111011
322211021111221121
413203003233323
5224404142112
620322050111
73065226214
oct743035773
9284244847
10126630907
1165530747
12364a9937
1320309140
1412b6440b
15b1b5407
hex78c3bfb

126630907 has 16 divisors (see below), whose sum is σ = 141603840. Its totient is φ = 112436352.

The previous prime is 126630883. The next prime is 126630913. The reversal of 126630907 is 709036621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-126630907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126630947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143953 + ... + 144829.

It is an arithmetic number, because the mean of its divisors is an integer number (8850240).

Almost surely, 2126630907 is an apocalyptic number.

126630907 is a deficient number, since it is larger than the sum of its proper divisors (14972933).

126630907 is a wasteful number, since it uses less digits than its factorization.

126630907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 126630907 is about 11253.0399004002. The cubic root of 126630907 is about 502.1651533552.

The spelling of 126630907 in words is "one hundred twenty-six million, six hundred thirty thousand, nine hundred seven".

Divisors: 1 13 29 377 383 877 4979 11107 11401 25433 144391 330629 335891 4366583 9740839 126630907