133405392 has 40 divisors (see below), whose sum is σ = 364905216. Its totient is φ = 41852416.

The previous prime is 133405381. The next prime is 133405397. The reversal of 133405392 is 293504331.

It is a super-2 number, since 2×133405392² = 35593997229347328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133405397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80928 + ... + 82559.

Almost surely, 2^133405392 is an apocalyptic number.

133405392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133405392 is an abundant number, since it is smaller than the sum of its proper divisors (231499824).

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

133405392 is a wasteful number, since it uses less digits than its factorization.

133405392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163515 (or 163509 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 133405392 is about 11550.1251941267. The cubic root of 133405392 is about 510.9649704147.

The spelling of 133405392 in words is "one hundred thirty-three million, four hundred five thousand, three hundred ninety-two".