133448840 has 32 divisors (see below), whose sum is σ = 343154880. Its totient is φ = 45753792.

The previous prime is 133448813. The next prime is 133448869. The reversal of 133448840 is 48844331.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 133448840.

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, 238022 + ... + 238581.

It is an arithmetic number, because the mean of its divisors is an integer number (10723590).

Almost surely, 2^133448840 is an apocalyptic number.

133448840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133448840 is an abundant number, since it is smaller than the sum of its proper divisors (209706040).

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

133448840 is a wasteful number, since it uses less digits than its factorization.

133448840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476621 (or 476617 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 133448840 is about 11552.0058864251. The cubic root of 133448840 is about 511.0204354301.

The spelling of 133448840 in words is "one hundred thirty-three million, four hundred forty-eight thousand, eight hundred forty".