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2881401897 = 31187315209
BaseRepresentation
bin1010101110111110…
…1011010000101001
321102210212101022210
42223233223100221
521400114330042
61153530235333
7131255340423
oct25357532051
97383771283
102881401897
111249526990
12684b85b49
1336bc5b74a
141d4973813
1511ce68a9c
hexabbeb429

2881401897 has 8 divisors (see below), whose sum is σ = 4191130080. Its totient is φ = 1746304160.

The previous prime is 2881401883. The next prime is 2881401931. The reversal of 2881401897 is 7981041882.

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 2881401897 - 27 = 2881401769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2881401827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43657572 + ... + 43657637.

It is an arithmetic number, because the mean of its divisors is an integer number (523891260).

Almost surely, 22881401897 is an apocalyptic number.

It is an amenable number.

2881401897 is a deficient number, since it is larger than the sum of its proper divisors (1309728183).

2881401897 is a wasteful number, since it uses less digits than its factorization.

2881401897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87315223.

The product of its (nonzero) digits is 258048, while the sum is 48.

The square root of 2881401897 is about 53678.6912750302. The cubic root of 2881401897 is about 1422.9881361106.

The spelling of 2881401897 in words is "two billion, eight hundred eighty-one million, four hundred one thousand, eight hundred ninety-seven".

Divisors: 1 3 11 33 87315209 261945627 960467299 2881401897