Search a number
-
+
227700081 = 3274398233
BaseRepresentation
bin11011001001001…
…10110101110001
3120212110100210100
431210212311301
5431242400311
634332223013
75433263430
oct1544466561
9525410710
10227700081
11107592494
126430aa69
133823549b
1422353117
1514ecba56
hexd926d71

227700081 has 24 divisors (see below), whose sum is σ = 376787840. Its totient is φ = 129802176.

The previous prime is 227700073. The next prime is 227700089. The reversal of 227700081 is 180007722.

It is an interprime number because it is at equal distance from previous prime (227700073) and next prime (227700089).

It is not a de Polignac number, because 227700081 - 23 = 227700073 is a prime.

It is a super-2 number, since 2×2277000812 = 103694653774813122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227700089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23541 + ... + 31773.

Almost surely, 2227700081 is an apocalyptic number.

227700081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

227700081 is a deficient number, since it is larger than the sum of its proper divisors (149087759).

227700081 is a wasteful number, since it uses less digits than its factorization.

227700081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8685 (or 8682 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 227700081 is about 15089.7342918953. The cubic root of 227700081 is about 610.6434856030.

It can be divided in two parts, 2277000 and 81, that added together give a square (2277081 = 15092).

The spelling of 227700081 in words is "two hundred twenty-seven million, seven hundred thousand, eighty-one".

Divisors: 1 3 7 9 21 63 439 1317 3073 3951 8233 9219 24699 27657 57631 74097 172893 518679 3614287 10842861 25300009 32528583 75900027 227700081