133397370 has 24 divisors (see below), whose sum is σ = 346833396. Its totient is φ = 35572608.

The previous prime is 133397357. The next prime is 133397389. The reversal of 133397370 is 73793331.

It can be written as a sum of positive squares in 2 ways, for example, as 131262849 + 2134521 = 11457^2 + 1461^2 .

It is a Curzon 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, 741007 + ... + 741186.

Almost surely, 2^133397370 is an apocalyptic number.

133397370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133397370 is an abundant number, since it is smaller than the sum of its proper divisors (213436026).

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

133397370 is a wasteful number, since it uses less digits than its factorization.

133397370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482206 (or 1482203 counting only the distinct ones).

The product of its (nonzero) digits is 35721, while the sum is 36.

The square root of 133397370 is about 11549.7779199429. Note that the first 3 decimals coincide. The cubic root of 133397370 is about 510.9547283420.

The spelling of 133397370 in words is "one hundred thirty-three million, three hundred ninety-seven thousand, three hundred seventy".