133397400 has 48 divisors (see below), whose sum is σ = 413533800. Its totient is φ = 35572480.

The previous prime is 133397399. The next prime is 133397417. The reversal of 133397400 is 4793331.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 110565 + ... + 111764.

Almost surely, 2^133397400 is an apocalyptic number.

133397400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133397400 is an abundant number, since it is smaller than the sum of its proper divisors (280136400).

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

133397400 is a wasteful number, since it uses less digits than its factorization.

133397400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222348 (or 222339 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 133397400 is about 11549.7792186691. The cubic root of 133397400 is about 510.9547666452.

The spelling of 133397400 in words is "one hundred thirty-three million, three hundred ninety-seven thousand, four hundred".