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2904980 = 2251311173
BaseRepresentation
bin1011000101001110010100
312110120212212
423011032110
51220424410
6142132552
733456221
oct13051624
95416785
102904980
111704611
12b81158
137a9330
14558948
153c5b05
hex2c5394

2904980 has 24 divisors (see below), whose sum is σ = 6570312. Its totient is φ = 1072512.

The previous prime is 2904949. The next prime is 2904989. The reversal of 2904980 is 894092.

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 2869636 = 188^2 + 1694^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2904989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5327 + ... + 5846.

It is an arithmetic number, because the mean of its divisors is an integer number (273763).

22904980 is an apocalyptic number.

2904980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2904980 is an abundant number, since it is smaller than the sum of its proper divisors (3665332).

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

2904980 is a wasteful number, since it uses less digits than its factorization.

2904980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11195 (or 11193 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2904980 is about 1704.4001877493. The cubic root of 2904980 is about 142.6858967101.

The spelling of 2904980 in words is "two million, nine hundred four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 11173 22346 44692 55865 111730 145249 223460 290498 580996 726245 1452490 2904980