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133880 = 2353347
BaseRepresentation
bin100000101011111000
320210122112
4200223320
513241010
62511452
71065215
oct405370
9223575
10133880
119164a
1265588
1348c26
1436b0c
1529a05
hex20af8

133880 has 16 divisors (see below), whose sum is σ = 301320. Its totient is φ = 53536.

The previous prime is 133877. The next prime is 133919. The reversal of 133880 is 88331.

133880 = T61 + T62 + ... + T100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634 + ... + 1713.

2133880 is an apocalyptic number.

133880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133880 is an abundant number, since it is smaller than the sum of its proper divisors (167440).

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

133880 is a wasteful number, since it uses less digits than its factorization.

133880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358 (or 3354 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 133880 is about 365.8961601329. The cubic root of 133880 is about 51.1570195938.

Adding to 133880 its sum of digits (23), we get a triangular number (133903 = T517).

The spelling of 133880 in words is "one hundred thirty-three thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 3347 6694 13388 16735 26776 33470 66940 133880