133402332 has 48 divisors (see below), whose sum is σ = 376669440. Its totient is φ = 35872512.

The previous prime is 133402327. The next prime is 133402333. The reversal of 133402332 is 233204331.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 133402299 and 133402308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133402333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45282 + ... + 48137.

It is an arithmetic number, because the mean of its divisors is an integer number (7847280).

Almost surely, 2^133402332 is an apocalyptic number.

133402332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133402332 is an abundant number, since it is smaller than the sum of its proper divisors (243267108).

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

133402332 is a wasteful number, since it uses less digits than its factorization.

133402332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93450 (or 93448 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133402332 is about 11549.9927272704. The cubic root of 133402332 is about 510.9610636141.

Adding to 133402332 its reverse (233204331), we get a palindrome (366606663).

The spelling of 133402332 in words is "one hundred thirty-three million, four hundred two thousand, three hundred thirty-two".