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2499980 = 225722551
BaseRepresentation
bin1001100010010110001100
311201000022212
421202112030
51114444410
6125325552
730151400
oct11422614
94630285
102499980
1114582aa
12a068b8
13696ba2
14491100
15345b05
hex26258c

2499980 has 36 divisors (see below), whose sum is σ = 6109488. Its totient is φ = 856800.

The previous prime is 2499967. The next prime is 2499983. The reversal of 2499980 is 899942.

It is not an unprimeable number, because it can be changed into a prime (2499983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (169708).

22499980 is an apocalyptic number.

2499980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2499980 is an abundant number, since it is smaller than the sum of its proper divisors (3609508).

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

2499980 is a wasteful number, since it uses less digits than its factorization.

2499980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 2499980 is about 1581.1325055162. The cubic root of 2499980 is about 135.7205189064.

The spelling of 2499980 in words is "two million, four hundred ninety-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 2551 5102 10204 12755 17857 25510 35714 51020 71428 89285 124999 178570 249998 357140 499996 624995 1249990 2499980