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2380021 = 71033301
BaseRepresentation
bin1001000101000011110101
311110220202221
421011003311
51102130041
6123002341
726141560
oct11050365
94426687
102380021
111386166
129693b1
136543c7
1445d4d7
153202d1
hex2450f5

2380021 has 8 divisors (see below), whose sum is σ = 2747264. Its totient is φ = 2019600.

The previous prime is 2380013. The next prime is 2380031. The reversal of 2380021 is 1200832.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2380021 - 23 = 2380013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2379977 and 2380004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2380031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (343408).

22380021 is an apocalyptic number.

It is an amenable number.

2380021 is a deficient number, since it is larger than the sum of its proper divisors (367243).

2380021 is a wasteful number, since it uses less digits than its factorization.

2380021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2380021 is about 1542.7316681782. The cubic root of 2380021 is about 133.5140376229.

Adding to 2380021 its reverse (1200832), we get a palindrome (3580853).

The spelling of 2380021 in words is "two million, three hundred eighty thousand, twenty-one".

Divisors: 1 7 103 721 3301 23107 340003 2380021