133078240 has 24 divisors (see below), whose sum is σ = 314397720. Its totient is φ = 53231232.

The previous prime is 133078213. The next prime is 133078241. The reversal of 133078240 is 42870331.

It is a super-2 number, since 2×133078240² = 35419635922995200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133078199 and 133078208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133078241) 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, 415710 + ... + 416029.

It is an arithmetic number, because the mean of its divisors is an integer number (13099905).

Almost surely, 2^133078240 is an apocalyptic number.

133078240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133078240 is an abundant number, since it is smaller than the sum of its proper divisors (181319480).

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

133078240 is an equidigital number, since it uses as much as digits as its factorization.

133078240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831754 (or 831746 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 133078240 is about 11535.9542301450. The cubic root of 133078240 is about 510.5469462215.

The spelling of 133078240 in words is "one hundred thirty-three million, seventy-eight thousand, two hundred forty".