133616464 has 40 divisors (see below), whose sum is σ = 276732288. Its totient is φ = 62277120.

The previous prime is 133616459. The next prime is 133616473. The reversal of 133616464 is 464616331.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26809 + ... + 31399.

Almost surely, 2^133616464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133616464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138366144).

133616464 is an abundant number, since it is smaller than the sum of its proper divisors (143115824).

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

133616464 is a wasteful number, since it uses less digits than its factorization.

133616464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723 (or 4717 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 133616464 is about 11559.2587997674. The cubic root of 133616464 is about 511.2343087745.

The spelling of 133616464 in words is "one hundred thirty-three million, six hundred sixteen thousand, four hundred sixty-four".