133915452 has 48 divisors (see below), whose sum is σ = 344736000. Its totient is φ = 40120960.

The previous prime is 133915399. The next prime is 133915487. The reversal of 133915452 is 254519331.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6049 + ... + 17447.

It is an arithmetic number, because the mean of its divisors is an integer number (7182000).

Almost surely, 2^133915452 is an apocalyptic number.

133915452 is a gapful number since it is divisible by the number (12) 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 133915452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172368000).

133915452 is an abundant number, since it is smaller than the sum of its proper divisors (210820548).

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

133915452 is a wasteful number, since it uses less digits than its factorization.

133915452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11506 (or 11504 counting only the distinct ones).

The product of its digits is 16200, while the sum is 33.

The square root of 133915452 is about 11572.1844091770. The cubic root of 133915452 is about 511.6153472822.

The spelling of 133915452 in words is "one hundred thirty-three million, nine hundred fifteen thousand, four hundred fifty-two".