133644027 has 32 divisors (see below), whose sum is σ = 200309760. Its totient is φ = 78569120.

The previous prime is 133644023. The next prime is 133644031. The reversal of 133644027 is 720446331.

It is an interprime number because it is at equal distance from previous prime (133644023) and next prime (133644031).

It is not a de Polignac number, because 133644027 - 2² = 133644023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133643985 and 133644003.

It is not an unprimeable number, because it can be changed into a prime (133644023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161188 + ... + 162014.

It is an arithmetic number, because the mean of its divisors is an integer number (6259680).

Almost surely, 2^133644027 is an apocalyptic number.

133644027 is a deficient number, since it is larger than the sum of its proper divisors (66665733).

133644027 is a wasteful number, since it uses less digits than its factorization.

133644027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 133644027 is about 11560.4509860126. The cubic root of 133644027 is about 511.2694595885.

It can be divided in two parts, 13364 and 4027, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 133644027 in words is "one hundred thirty-three million, six hundred forty-four thousand, twenty-seven".