178745452 has 12 divisors (see below), whose sum is σ = 312953760. Its totient is φ = 89330096.

The previous prime is 178745401. The next prime is 178745459. The reversal of 178745452 is 254547871.

178745452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×178745452² = 63899873221368608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 178745399 and 178745408.

It is not an unprimeable number, because it can be changed into a prime (178745459) 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, 52 + ... + 18907.

It is an arithmetic number, because the mean of its divisors is an integer number (26079480).

Almost surely, 2^178745452 is an apocalyptic number.

It is an amenable number.

178745452 is a deficient number, since it is larger than the sum of its proper divisors (134208308).

178745452 is a wasteful number, since it uses less digits than its factorization.

178745452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21320 (or 21318 counting only the distinct ones).

The product of its digits is 313600, while the sum is 43.

The square root of 178745452 is about 13369.5718704826. The cubic root of 178745452 is about 563.3068081142.

The spelling of 178745452 in words is "one hundred seventy-eight million, seven hundred forty-five thousand, four hundred fifty-two".