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19300880 = 245241261
BaseRepresentation
bin100100110100…
…0001000010000
31100022120211102
41021220020100
514420112010
61525403532
7323024534
oct111501020
940276742
1019300880
11a993045
1265695a8
133cca151
1427c5bc4
151a63ba5
hex1268210

19300880 has 20 divisors (see below), whose sum is σ = 44874732. Its totient is φ = 7720320.

The previous prime is 19300877. The next prime is 19300901. The reversal of 19300880 is 8800391.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 16032016 = 1808^2 + 4004^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 120551 + ... + 120710.

Almost surely, 219300880 is an apocalyptic number.

19300880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19300880 is an abundant number, since it is smaller than the sum of its proper divisors (25573852).

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

19300880 is a wasteful number, since it uses less digits than its factorization.

19300880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241274 (or 241268 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 19300880 is about 4393.2766814759. The cubic root of 19300880 is about 268.2413360367.

The spelling of 19300880 in words is "nineteen million, three hundred thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 241261 482522 965044 1206305 1930088 2412610 3860176 4825220 9650440 19300880