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2002040 = 23550051
BaseRepresentation
bin111101000110001111000
310202201021122
413220301320
51003031130
6110524412
723005565
oct7506170
93681248
102002040
111148187
12806708
13551351
143a186c
152982e5
hex1e8c78

2002040 has 16 divisors (see below), whose sum is σ = 4504680. Its totient is φ = 800800.

The previous prime is 2002019. The next prime is 2002061. The reversal of 2002040 is 402002.

Adding to 2002040 its reverse (402002), we get a palindrome (2404042).

2002040 = 1172 + 1182 + ... + 1962.

It is an interprime number because it is at equal distance from previous prime (2002019) and next prime (2002061).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24986 + ... + 25065.

22002040 is an apocalyptic number.

2002040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002040 is an abundant number, since it is smaller than the sum of its proper divisors (2502640).

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

2002040 is a wasteful number, since it uses less digits than its factorization.

2002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50062 (or 50058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 2002040 is about 1414.9346274652. The cubic root of 2002040 is about 126.0349277487.

The spelling of 2002040 in words is "two million, two thousand, forty", and thus it is an eban number.

Divisors: 1 2 4 5 8 10 20 40 50051 100102 200204 250255 400408 500510 1001020 2002040