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2027921 = 72111373
BaseRepresentation
bin111101111000110010001
310211000210012
413233012101
51004343141
6111244305
723144210
oct7570621
93730705
102027921
111165675
12819695
1356006c
143ab077
152a0ceb
hex1ef191

2027921 has 8 divisors (see below), whose sum is σ = 2330304. Its totient is φ = 1728720.

The previous prime is 2027911. The next prime is 2027951. The reversal of 2027921 is 1297202.

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

It is a de Polignac number, because none of the positive numbers 2k-2027921 is a prime.

It is a super-2 number, since 2×20279212 = 8224927164482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2027911) 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, 791 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (291288).

22027921 is an apocalyptic number.

It is an amenable number.

2027921 is a deficient number, since it is larger than the sum of its proper divisors (302383).

2027921 is a wasteful number, since it uses less digits than its factorization.

2027921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2027921 is about 1424.0509120112. The cubic root of 2027921 is about 126.5757018490.

The spelling of 2027921 in words is "two million, twenty-seven thousand, nine hundred twenty-one".

Divisors: 1 7 211 1373 1477 9611 289703 2027921