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2109240 = 23355731
BaseRepresentation
bin1000000010111100111000
310222011100000
420002330320
51014443430
6113113000
723633250
oct10027470
93864300
102109240
111210781
12858760
1358b093
143cc960
152b9e60
hex202f38

2109240 has 192 divisors, whose sum is σ = 8386560. Its totient is φ = 466560.

The previous prime is 2109223. The next prime is 2109253. The reversal of 2109240 is 429012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68025 + ... + 68055.

It is an arithmetic number, because the mean of its divisors is an integer number (43680).

22109240 is an apocalyptic number.

2109240 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 2109240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4193280).

2109240 is an abundant number, since it is smaller than the sum of its proper divisors (6277320).

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

2109240 is a wasteful number, since it uses less digits than its factorization.

2109240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2109240 is about 1452.3222782840. The cubic root of 2109240 is about 128.2454599809.

The spelling of 2109240 in words is "two million, one hundred nine thousand, two hundred forty".