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130666401 = 3219764131
BaseRepresentation
bin1111100100111…
…00111110100001
3100002212112121100
413302130332201
5231422311101
620544345013
73144434415
oct762347641
9302775540
10130666401
1167837668
1237915169
13210bcbc8
14134d4d45
15b710e86
hex7c9cfa1

130666401 has 12 divisors (see below), whose sum is σ = 198674320. Its totient is φ = 82526040.

The previous prime is 130666399. The next prime is 130666411. The reversal of 130666401 is 104666031.

It is not a de Polignac number, because 130666401 - 21 = 130666399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130666411) 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, 381895 + ... + 382236.

Almost surely, 2130666401 is an apocalyptic number.

It is an amenable number.

130666401 is a deficient number, since it is larger than the sum of its proper divisors (68007919).

130666401 is a wasteful number, since it uses less digits than its factorization.

130666401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764156 (or 764153 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 130666401 is about 11430.9405124863. The cubic root of 130666401 is about 507.4438301622.

The spelling of 130666401 in words is "one hundred thirty million, six hundred sixty-six thousand, four hundred one".

Divisors: 1 3 9 19 57 171 764131 2292393 6877179 14518489 43555467 130666401