180428385 has 8 divisors (see below), whose sum is σ = 288685440. Its totient is φ = 96228464.

The previous prime is 180428363. The next prime is 180428411. The reversal of 180428385 is 583824081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180428385 - 2⁶ = 180428321 is a prime.

It is a super-2 number, since 2×180428385² = 65108804227416450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6014265 + ... + 6014294.

It is an arithmetic number, because the mean of its divisors is an integer number (36085680).

Almost surely, 2^180428385 is an apocalyptic number.

180428385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

180428385 is a deficient number, since it is larger than the sum of its proper divisors (108257055).

180428385 is a wasteful number, since it uses less digits than its factorization.

180428385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12028567.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 180428385 is about 13432.3633438051. The cubic root of 180428385 is about 565.0691799281.

The spelling of 180428385 in words is "one hundred eighty million, four hundred twenty-eight thousand, three hundred eighty-five".