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1445348087 = 12911119557
BaseRepresentation
bin101011000100110…
…0100001011110111
310201201200021211122
41112021210023313
510430002114322
6355230454155
750550153551
oct12611441367
93651607748
101445348087
11681952457
1234406435b
131a0598671
14d9d584d1
1586d51442
hex562642f7

1445348087 has 4 divisors (see below), whose sum is σ = 1446468936. Its totient is φ = 1444227240.

The previous prime is 1445348063. The next prime is 1445348141. The reversal of 1445348087 is 7808435441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7808435441 = 19014107541.

It is a cyclic number.

It is not a de Polignac number, because 1445348087 - 28 = 1445347831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445348017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558488 + ... + 561069.

It is an arithmetic number, because the mean of its divisors is an integer number (361617234).

Almost surely, 21445348087 is an apocalyptic number.

1445348087 is a deficient number, since it is larger than the sum of its proper divisors (1120849).

1445348087 is a wasteful number, since it uses less digits than its factorization.

1445348087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120848.

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 1445348087 is about 38017.7338488238. The cubic root of 1445348087 is about 1130.6394915811.

The spelling of 1445348087 in words is "one billion, four hundred forty-five million, three hundred forty-eight thousand, eighty-seven".

Divisors: 1 1291 1119557 1445348087