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2990240 = 255111699
BaseRepresentation
bin1011011010000010100000
312121220211122
423122002200
51231141430
6144031412
734262621
oct13320240
95556748
102990240
111762680
121002568
13809096
1457ba48
153e0ee5
hex2da0a0

2990240 has 48 divisors (see below), whose sum is σ = 7711200. Its totient is φ = 1086720.

The previous prime is 2990237. The next prime is 2990279. The reversal of 2990240 is 420992.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (160650).

22990240 is an apocalyptic number.

2990240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2990240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3855600).

2990240 is an abundant number, since it is smaller than the sum of its proper divisors (4720960).

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

2990240 is a wasteful number, since it uses less digits than its factorization.

2990240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725 (or 1717 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2990240 is about 1729.2310429784. The cubic root of 2990240 is about 144.0683831587.

The spelling of 2990240 in words is "two million, nine hundred ninety thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 352 440 880 1699 1760 3398 6796 8495 13592 16990 18689 27184 33980 37378 54368 67960 74756 93445 135920 149512 186890 271840 299024 373780 598048 747560 1495120 2990240