133447400 has 48 divisors (see below), whose sum is σ = 314042400. Its totient is φ = 52729280.

The previous prime is 133447373. The next prime is 133447427. The reversal of 133447400 is 4744331.

It is an interprime number because it is at equal distance from previous prime (133447373) and next prime (133447427).

It is a self number, because there is not a number n which added to its sum of digits gives 133447400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12581 + ... + 20619.

It is an arithmetic number, because the mean of its divisors is an integer number (6542550).

Almost surely, 2^133447400 is an apocalyptic number.

133447400 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 133447400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157021200).

133447400 is an abundant number, since it is smaller than the sum of its proper divisors (180595000).

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

133447400 is a wasteful number, since it uses less digits than its factorization.

133447400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8138 (or 8129 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 133447400 is about 11551.9435594189. The cubic root of 133447400 is about 511.0185973422.

The spelling of 133447400 in words is "one hundred thirty-three million, four hundred forty-seven thousand, four hundred".