133975464 has 32 divisors (see below), whose sum is σ = 382787520. Its totient is φ = 38278656.

The previous prime is 133975463. The next prime is 133975481. The reversal of 133975464 is 464579331.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (133975463) 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, 398569 + ... + 398904.

It is an arithmetic number, because the mean of its divisors is an integer number (11962110).

Almost surely, 2^133975464 is an apocalyptic number.

133975464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133975464 is an abundant number, since it is smaller than the sum of its proper divisors (248812056).

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

133975464 is a wasteful number, since it uses less digits than its factorization.

133975464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797489 (or 797485 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 133975464 is about 11574.7770604880. Note that the first 3 decimals coincide. The cubic root of 133975464 is about 511.6917598608.

The spelling of 133975464 in words is "one hundred thirty-three million, nine hundred seventy-five thousand, four hundred sixty-four".