133472745 has 32 divisors (see below), whose sum is σ = 271184640. Its totient is φ = 61015680.

The previous prime is 133472743. The next prime is 133472747. The reversal of 133472745 is 547274331.

It is an interprime number because it is at equal distance from previous prime (133472743) and next prime (133472747).

It is not a de Polignac number, because 133472745 - 2¹ = 133472743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133472741) 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, 69676 + ... + 71565.

It is an arithmetic number, because the mean of its divisors is an integer number (8474520).

Almost surely, 2^133472745 is an apocalyptic number.

133472745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133472745 is an abundant number, since it is smaller than the sum of its proper divisors (137711895).

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

133472745 is a wasteful number, since it uses less digits than its factorization.

133472745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141262 (or 141256 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 133472745 is about 11553.0405088877. The cubic root of 133472745 is about 511.0509470333.

It can be divided in two parts, 133 and 472745, that added together give a triangular number (472878 = T₉₇₂).

The spelling of 133472745 in words is "one hundred thirty-three million, four hundred seventy-two thousand, seven hundred forty-five".