133077438 has 64 divisors (see below), whose sum is σ = 320705280. Its totient is φ = 40660704.

The previous prime is 133077437. The next prime is 133077443. The reversal of 133077438 is 834770331.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133077437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113845 + ... + 115007.

It is an arithmetic number, because the mean of its divisors is an integer number (5011020).

Almost surely, 2^133077438 is an apocalyptic number.

133077438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133077438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160352640).

133077438 is an abundant number, since it is smaller than the sum of its proper divisors (187627842).

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

133077438 is a wasteful number, since it uses less digits than its factorization.

133077438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 133077438 is about 11535.9194692057. The cubic root of 133077438 is about 510.5459206106.

The spelling of 133077438 in words is "one hundred thirty-three million, seventy-seven thousand, four hundred thirty-eight".