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989420 = 22561811
BaseRepresentation
bin11110001100011101100
31212021020012
43301203230
5223130140
633112352
711260415
oct3614354
91767205
10989420
11616403
123b86b8
13288473
141ba80c
15148265
hexf18ec

989420 has 24 divisors (see below), whose sum is σ = 2114448. Its totient is φ = 388800.

The previous prime is 989419. The next prime is 989423. The reversal of 989420 is 24989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 815 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (88102).

2989420 is an apocalyptic number.

It is an amenable number.

989420 is an abundant number, since it is smaller than the sum of its proper divisors (1125028).

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

989420 is a wasteful number, since it uses less digits than its factorization.

989420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 989420 is about 994.6959334390. The cubic root of 989420 is about 99.6460822332.

The spelling of 989420 in words is "nine hundred eighty-nine thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 811 1220 1622 3244 4055 8110 16220 49471 98942 197884 247355 494710 989420