133401456 has 30 divisors (see below), whose sum is σ = 373339200. Its totient is φ = 44467104.

The previous prime is 133401439. The next prime is 133401461. The reversal of 133401456 is 654104331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 463056 + ... + 463343.

It is an arithmetic number, because the mean of its divisors is an integer number (12444640).

Almost surely, 2^133401456 is an apocalyptic number.

133401456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133401456 is an abundant number, since it is smaller than the sum of its proper divisors (239937744).

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

133401456 is a wasteful number, since it uses less digits than its factorization.

133401456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926413 (or 926404 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 133401456 is about 11549.9548051064. The cubic root of 133401456 is about 510.9599451857.

Adding to 133401456 its reverse (654104331), we get a palindrome (787505787).

The spelling of 133401456 in words is "one hundred thirty-three million, four hundred one thousand, four hundred fifty-six".