133406748 has 36 divisors (see below), whose sum is σ = 337580880. Its totient is φ = 44421696.

The previous prime is 133406737. The next prime is 133406761. The reversal of 133406748 is 847604331.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54936 + ... + 57312.

Almost surely, 2^133406748 is an apocalyptic number.

133406748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133406748 is an abundant number, since it is smaller than the sum of its proper divisors (204174132).

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

133406748 is a wasteful number, since it uses less digits than its factorization.

133406748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 133406748 is about 11550.1838946399. The cubic root of 133406748 is about 510.9667016444.

The spelling of 133406748 in words is "one hundred thirty-three million, four hundred six thousand, seven hundred forty-eight".