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99420 = 22351657
BaseRepresentation
bin11000010001011100
312001101020
4120101130
511140140
62044140
7562566
oct302134
9161336
1099420
1168772
1249650
1336339
1428336
151e6d0
hex1845c

99420 has 24 divisors (see below), whose sum is σ = 278544. Its totient is φ = 26496.

The previous prime is 99409. The next prime is 99431. The reversal of 99420 is 2499.

99420 = 292 + 302 + ... + 682.

It is an interprime number because it is at equal distance from previous prime (99409) and next prime (99431).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (11606).

299420 is an apocalyptic number.

It is an amenable number.

99420 is an abundant number, since it is smaller than the sum of its proper divisors (179124).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139272).

99420 is a wasteful number, since it uses less digits than its factorization.

99420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 99420 is about 315.3093718874. The cubic root of 99420 is about 46.3259768985.

The spelling of 99420 in words is "ninety-nine thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1657 3314 4971 6628 8285 9942 16570 19884 24855 33140 49710 99420