9180428 has 6 divisors (see below), whose sum is σ = 16065756. Its totient is φ = 4590212.

The previous prime is 9180421. The next prime is 9180469. The reversal of 9180428 is 8240819.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9180394 and 9180403.

It is not an unprimeable number, because it can be changed into a prime (9180421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1147550 + ... + 1147557.

It is an arithmetic number, because the mean of its divisors is an integer number (2677626).

Almost surely, 2^9180428 is an apocalyptic number.

It is an amenable number.

9180428 is a deficient number, since it is larger than the sum of its proper divisors (6885328).

9180428 is a wasteful number, since it uses less digits than its factorization.

9180428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295111 (or 2295109 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 9180428 is about 3029.9221112101. The cubic root of 9180428 is about 209.3892154305.

The spelling of 9180428 in words is "nine million, one hundred eighty thousand, four hundred twenty-eight".