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220129148 = 2255032287
BaseRepresentation
bin11010001111011…
…10011101111100
3120100012201102102
431013232131330
5422323113043
633502044232
75312031641
oct1507563574
9510181372
10220129148
11103291318
1261879678
13367b4445
1421341dc8
15144d36b8
hexd1ee77c

220129148 has 6 divisors (see below), whose sum is σ = 385226016. Its totient is φ = 110064572.

The previous prime is 220129139. The next prime is 220129163. The reversal of 220129148 is 841921022.

It is a self number, because there is not a number n which added to its sum of digits gives 220129148.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27516140 + ... + 27516147.

It is an arithmetic number, because the mean of its divisors is an integer number (64204336).

Almost surely, 2220129148 is an apocalyptic number.

It is an amenable number.

220129148 is a deficient number, since it is larger than the sum of its proper divisors (165096868).

220129148 is a wasteful number, since it uses less digits than its factorization.

220129148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55032291 (or 55032289 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 220129148 is about 14836.7499136435. The cubic root of 220129148 is about 603.7991781530.

The spelling of 220129148 in words is "two hundred twenty million, one hundred twenty-nine thousand, one hundred forty-eight".

Divisors: 1 2 4 55032287 110064574 220129148