133402230 has 192 divisors, whose sum is σ = 417493440. Its totient is φ = 29196288.

The previous prime is 133402229. The next prime is 133402253. The reversal of 133402230 is 32204331.

133402230 is a `hidden beast` number, since 1 + 33 + 402 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 377734 + ... + 378086.

It is an arithmetic number, because the mean of its divisors is an integer number (2174445).

Almost surely, 2^133402230 is an apocalyptic number.

133402230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133402230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208746720).

133402230 is an abundant number, since it is smaller than the sum of its proper divisors (284091210).

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

133402230 is a wasteful number, since it uses less digits than its factorization.

133402230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 133402230 is about 11549.9883116824. The cubic root of 133402230 is about 510.9609333864.

Adding to 133402230 its reverse (32204331), we get a palindrome (165606561).

The spelling of 133402230 in words is "one hundred thirty-three million, four hundred two thousand, two hundred thirty".