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2988920 = 235116793
BaseRepresentation
bin1011011001101101111000
312121212000202
423121231320
51231121140
6144021332
734256024
oct13315570
95555022
102988920
111761690
121001848
138085bc
1457b384
153e0915
hex2d9b78

2988920 has 32 divisors (see below), whose sum is σ = 7337520. Its totient is φ = 1086720.

The previous prime is 2988911. The next prime is 2988949. The reversal of 2988920 is 298892.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 2957 + ... + 3836.

22988920 is an apocalyptic number.

2988920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2988920 is an abundant number, since it is smaller than the sum of its proper divisors (4348600).

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

2988920 is a wasteful number, since it uses less digits than its factorization.

2988920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6815 (or 6811 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 2988920 is about 1728.8493283106. The cubic root of 2988920 is about 144.0471810417.

The spelling of 2988920 in words is "two million, nine hundred eighty-eight thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 6793 13586 27172 33965 54344 67930 74723 135860 149446 271720 298892 373615 597784 747230 1494460 2988920