133694320 has 120 divisors (see below), whose sum is σ = 336889152. Its totient is φ = 49282560.

The previous prime is 133694293. The next prime is 133694347. The reversal of 133694320 is 23496331.

It is an interprime number because it is at equal distance from previous prime (133694293) and next prime (133694347).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2844537 + ... + 2844583.

Almost surely, 2^133694320 is an apocalyptic number.

133694320 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 133694320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168444576).

133694320 is an abundant number, since it is smaller than the sum of its proper divisors (203194832).

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

133694320 is a wasteful number, since it uses less digits than its factorization.

133694320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 133694320 is about 11562.6259993135. The cubic root of 133694320 is about 511.3335852880. Note that the first 3 decimals are identical.

It can be divided in two parts, 13369 and 4320, that added together give a square (17689 = 133²).

The spelling of 133694320 in words is "one hundred thirty-three million, six hundred ninety-four thousand, three hundred twenty".