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2420020 = 225121001
BaseRepresentation
bin1001001110110100110100
311112221122101
421032310310
51104420040
6123511444
726366311
oct11166464
94487571
102420020
111403219
12988584
13669685
1446dd08
1532c09a
hex24ed34

2420020 has 12 divisors (see below), whose sum is σ = 5082084. Its totient is φ = 968000.

The previous prime is 2420017. The next prime is 2420051. The reversal of 2420020 is 200242.

It is a happy number.

2420020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1106704 + 1313316 = 1052^2 + 1146^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2419979 and 2420006.

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, 60481 + ... + 60520.

It is an arithmetic number, because the mean of its divisors is an integer number (423507).

22420020 is an apocalyptic number.

2420020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2420020 is an abundant number, since it is smaller than the sum of its proper divisors (2662064).

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

2420020 is a wasteful number, since it uses less digits than its factorization.

2420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121010 (or 121008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2420020 is about 1555.6413468406. The cubic root of 2420020 is about 134.2578387460.

Adding to 2420020 its reverse (200242), we get a palindrome (2620262).

The spelling of 2420020 in words is "two million, four hundred twenty thousand, twenty".

Divisors: 1 2 4 5 10 20 121001 242002 484004 605005 1210010 2420020