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2156774475 = 35228756993
BaseRepresentation
bin1000000010001101…
…1100010001001011
312120022100111101010
42000203130101023
513404113240400
6554003055003
7104306165142
oct20043342113
95508314333
102156774475
11a07496649
12502371463
13284aa891b
14166628759
15c952e450
hex808dc44b

2156774475 has 12 divisors (see below), whose sum is σ = 3565867256. Its totient is φ = 1150279680.

The previous prime is 2156774467. The next prime is 2156774491. The reversal of 2156774475 is 5744776512.

It is not a de Polignac number, because 2156774475 - 23 = 2156774467 is a prime.

It is a super-2 number, since 2×21567744752 = 9303352272023051250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14378422 + ... + 14378571.

Almost surely, 22156774475 is an apocalyptic number.

2156774475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2156774475 is a deficient number, since it is larger than the sum of its proper divisors (1409092781).

2156774475 is a wasteful number, since it uses less digits than its factorization.

2156774475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28757006 (or 28757001 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 48.

The square root of 2156774475 is about 46441.0860661118. The cubic root of 2156774475 is about 1292.0170506030.

The spelling of 2156774475 in words is "two billion, one hundred fifty-six million, seven hundred seventy-four thousand, four hundred seventy-five".

Divisors: 1 3 5 15 25 75 28756993 86270979 143784965 431354895 718924825 2156774475