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23273380 = 2251389513
BaseRepresentation
bin101100011000…
…1111110100100
31121210102002001
41120301332210
521424222010
62150455044
7401551264
oct130617644
947712061
1023273380
11121566a9
127964484
134a8b340
14313b7a4
15209ac3a
hex1631fa4

23273380 has 24 divisors (see below), whose sum is σ = 52634232. Its totient is φ = 8593152.

The previous prime is 23273339. The next prime is 23273381. The reversal of 23273380 is 8337232.

It can be written as a sum of positive squares in 4 ways, for example, as 79524 + 23193856 = 282^2 + 4816^2 .

It is not an unprimeable number, because it can be changed into a prime (23273381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44497 + ... + 45016.

It is an arithmetic number, because the mean of its divisors is an integer number (2193093).

Almost surely, 223273380 is an apocalyptic number.

23273380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23273380 is an abundant number, since it is smaller than the sum of its proper divisors (29360852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23273380 is a wasteful number, since it uses less digits than its factorization.

23273380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89535 (or 89533 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 23273380 is about 4824.2491643778. The cubic root of 23273380 is about 285.5090113634.

It can be divided in two parts, 23273 and 380, that added together give a triangular number (23653 = T217).

The spelling of 23273380 in words is "twenty-three million, two hundred seventy-three thousand, three hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 89513 179026 358052 447565 895130 1163669 1790260 2327338 4654676 5818345 11636690 23273380