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BaseRepresentation
bin110001100011101110
3101022110011
4301203232
522443430
64203434
71503544
oct614356
9338404
10202990
11129567
129957a
1371518
1453d94
154022a
hex318ee

202990 has 16 divisors (see below), whose sum is σ = 373248. Its totient is φ = 79456.

The previous prime is 202987. The next prime is 202999. The reversal of 202990 is 99202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202999) 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, 339 + ... + 721.

It is an arithmetic number, because the mean of its divisors is an integer number (23328).

2202990 is an apocalyptic number.

202990 is a deficient number, since it is larger than the sum of its proper divisors (170258).

202990 is a wasteful number, since it uses less digits than its factorization.

202990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 202990 is about 450.5441154870. The cubic root of 202990 is about 58.7703415302.

The spelling of 202990 in words is "two hundred two thousand, nine hundred ninety".