133672923 has 20 divisors (see below), whose sum is σ = 210196360. Its totient is φ = 84424032.

The previous prime is 133672873. The next prime is 133672951. The reversal of 133672923 is 329276331.

133672923 is a `hidden beast` number, since 1 + 3 + 367 + 292 + 3 = 666.

It is not a de Polignac number, because 133672923 - 2⁶ = 133672859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133672993) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41890 + ... + 44967.

It is an arithmetic number, because the mean of its divisors is an integer number (10509818).

Almost surely, 2^133672923 is an apocalyptic number.

133672923 is a deficient number, since it is larger than the sum of its proper divisors (76523437).

133672923 is an equidigital number, since it uses as much as digits as its factorization.

133672923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86888 (or 86879 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 133672923 is about 11561.7006966968. The cubic root of 133672923 is about 511.3063051750.

It can be divided in two parts, 13367 and 2923, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 133672923 in words is "one hundred thirty-three million, six hundred seventy-two thousand, nine hundred twenty-three".