133397456 has 20 divisors (see below), whose sum is σ = 259816704. Its totient is φ = 66348000.

The previous prime is 133397443. The next prime is 133397479. The reversal of 133397456 is 654793331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18770 + ... + 24881.

Almost surely, 2^133397456 is an apocalyptic number.

133397456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133397456 is a deficient number, since it is larger than the sum of its proper divisors (126419248).

133397456 is a wasteful number, since it uses less digits than its factorization.

133397456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43850 (or 43844 counting only the distinct ones).

The product of its digits is 204120, while the sum is 41.

The square root of 133397456 is about 11549.7816429576. The cubic root of 133397456 is about 510.9548381445.

It can be divided in two parts, 1333 and 97456, that added together give a palindrome (98789).

The spelling of 133397456 in words is "one hundred thirty-three million, three hundred ninety-seven thousand, four hundred fifty-six".