133083540 has 96 divisors (see below), whose sum is σ = 424206720. Its totient is φ = 34617600.

The previous prime is 133083529. The next prime is 133083551. The reversal of 133083540 is 45380331.

It is a happy number.

133083540 is a `hidden beast` number, since 1 + 3 + 308 + 354 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (133083529) and next prime (133083551).

It is a super-2 number, since 2×133083540² = 35422457237863200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19135 + ... + 25145.

It is an arithmetic number, because the mean of its divisors is an integer number (4418820).

Almost surely, 2^133083540 is an apocalyptic number.

133083540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133083540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212103360).

133083540 is an abundant number, since it is smaller than the sum of its proper divisors (291123180).

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

133083540 is a wasteful number, since it uses less digits than its factorization.

133083540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 133083540 is about 11536.1839444419. The cubic root of 133083540 is about 510.5537238457.

The spelling of 133083540 in words is "one hundred thirty-three million, eighty-three thousand, five hundred forty".