30400285 has 16 divisors (see below), whose sum is σ = 38808000. Its totient is φ = 22795776.

The previous prime is 30400261. The next prime is 30400289. The reversal of 30400285 is 58200403.

It is not a de Polignac number, because 30400285 - 2¹³ = 30392093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30400289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7566 + ... + 10864.

It is an arithmetic number, because the mean of its divisors is an integer number (2425500).

Almost surely, 2^30400285 is an apocalyptic number.

It is an amenable number.

30400285 is a deficient number, since it is larger than the sum of its proper divisors (8407715).

30400285 is a wasteful number, since it uses less digits than its factorization.

30400285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 30400285 is about 5513.6453458669. The cubic root of 30400285 is about 312.0991254452.

Adding to 30400285 its reverse (58200403), we get a palindrome (88600688).

The spelling of 30400285 in words is "thirty million, four hundred thousand, two hundred eighty-five".