133439260 has 12 divisors (see below), whose sum is σ = 280222488. Its totient is φ = 53375696.

The previous prime is 133439249. The next prime is 133439263. The reversal of 133439260 is 62934331.

It is a super-2 number, since 2×133439260² = 35612072218695200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133439263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335962 + ... + 3336001.

It is an arithmetic number, because the mean of its divisors is an integer number (23351874).

Almost surely, 2^133439260 is an apocalyptic number.

133439260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133439260 is an abundant number, since it is smaller than the sum of its proper divisors (146783228).

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

133439260 is a wasteful number, since it uses less digits than its factorization.

133439260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671972 (or 6671970 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 133439260 is about 11551.5912323801. The cubic root of 133439260 is about 511.0082067914.

The spelling of 133439260 in words is "one hundred thirty-three million, four hundred thirty-nine thousand, two hundred sixty".