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2088011521 = 109167251457
BaseRepresentation
bin111110001110100…
…1000011100000001
312101111221222100001
41330131020130001
513234012332041
6543105200001
7102512543101
oct17435103401
95344858301
102088011521
1198169aa62
124a3330001
1327378119b
1415b449201
15c349a131
hex7c748701

2088011521 has 16 divisors (see below), whose sum is σ = 2132887680. Its totient is φ = 2043792000.

The previous prime is 2088011477. The next prime is 2088011531. The reversal of 2088011521 is 1251108802.

It is a cyclic number.

It is not a de Polignac number, because 2088011521 - 213 = 2088003329 is a prime.

It is a super-2 number, since 2×20880115212 = 8719584223657466882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2088011521.

It is not an unprimeable number, because it can be changed into a prime (2088011531) 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, 4568725 + ... + 4569181.

It is an arithmetic number, because the mean of its divisors is an integer number (133305480).

Almost surely, 22088011521 is an apocalyptic number.

It is an amenable number.

2088011521 is a deficient number, since it is larger than the sum of its proper divisors (44876159).

2088011521 is a wasteful number, since it uses less digits than its factorization.

2088011521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 2088011521 is about 45694.7647001273. The cubic root of 2088011521 is about 1278.1376564732.

The spelling of 2088011521 in words is "two billion, eighty-eight million, eleven thousand, five hundred twenty-one".

Divisors: 1 109 167 251 457 18203 27359 41917 49813 76319 114707 4568953 8318771 12503063 19156069 2088011521