133936780 has 12 divisors (see below), whose sum is σ = 281267280. Its totient is φ = 53574704.

The previous prime is 133936763. The next prime is 133936783. The reversal of 133936780 is 87639331.

It is a super-2 number, since 2×133936780² = 35878122073536800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133936783) 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, 3348400 + ... + 3348439.

It is an arithmetic number, because the mean of its divisors is an integer number (23438940).

Almost surely, 2^133936780 is an apocalyptic number.

133936780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133936780 is an abundant number, since it is smaller than the sum of its proper divisors (147330500).

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

133936780 is a wasteful number, since it uses less digits than its factorization.

133936780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696848 (or 6696846 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 133936780 is about 11573.1058925424. The cubic root of 133936780 is about 511.6425065899.

The spelling of 133936780 in words is "one hundred thirty-three million, nine hundred thirty-six thousand, seven hundred eighty".