133513400 has 48 divisors (see below), whose sum is σ = 311196600. Its totient is φ = 53271680.

The previous prime is 133513363. The next prime is 133513421. The reversal of 133513400 is 4315331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131294 + ... + 132306.

Almost surely, 2^133513400 is an apocalyptic number.

133513400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133513400 is an abundant number, since it is smaller than the sum of its proper divisors (177683200).

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

133513400 is a wasteful number, since it uses less digits than its factorization.

133513400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 133513400 is about 11554.7998684529. The cubic root of 133513400 is about 511.1028294534.

Adding to 133513400 its reverse (4315331), we get a palindrome (137828731).

The spelling of 133513400 in words is "one hundred thirty-three million, five hundred thirteen thousand, four hundred".