133478670 has 64 divisors (see below), whose sum is σ = 347457600. Its totient is φ = 32621568.

The previous prime is 133478663. The next prime is 133478699. The reversal of 133478670 is 76874331.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56962 + ... + 59258.

It is an arithmetic number, because the mean of its divisors is an integer number (5429025).

Almost surely, 2^133478670 is an apocalyptic number.

133478670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133478670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173728800).

133478670 is an abundant number, since it is smaller than the sum of its proper divisors (213978930).

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

133478670 is a wasteful number, since it uses less digits than its factorization.

133478670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 133478670 is about 11553.2969320450. The cubic root of 133478670 is about 511.0585089567.

The spelling of 133478670 in words is "one hundred thirty-three million, four hundred seventy-eight thousand, six hundred seventy".