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2509990 = 257231559
BaseRepresentation
bin1001100100110010100110
311201112001121
421210302212
51120304430
6125444154
730222520
oct11446246
94645047
102509990
11146487a
12a1065a
1369b602
14494a10
15348a7a
hex264ca6

2509990 has 32 divisors (see below), whose sum is σ = 5391360. Its totient is φ = 822624.

The previous prime is 2509981. The next prime is 2509993. The reversal of 2509990 is 999052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831 + ... + 2389.

It is an arithmetic number, because the mean of its divisors is an integer number (168480).

22509990 is an apocalyptic number.

2509990 is an abundant number, since it is smaller than the sum of its proper divisors (2881370).

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

2509990 is a wasteful number, since it uses less digits than its factorization.

2509990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 2509990 is about 1584.2947958003. The cubic root of 2509990 is about 135.9014207769.

The spelling of 2509990 in words is "two million, five hundred nine thousand, nine hundred ninety".

Divisors: 1 2 5 7 10 14 23 35 46 70 115 161 230 322 805 1559 1610 3118 7795 10913 15590 21826 35857 54565 71714 109130 179285 250999 358570 501998 1254995 2509990