30440235 has 32 divisors (see below), whose sum is σ = 55941120. Its totient is φ = 13845888.

The previous prime is 30440213. The next prime is 30440239. The reversal of 30440235 is 53204403.

It is a happy number.

It is not a de Polignac number, because 30440235 - 2⁷ = 30440107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (30440239) 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, 24489 + ... + 25701.

It is an arithmetic number, because the mean of its divisors is an integer number (1748160).

Almost surely, 2^30440235 is an apocalyptic number.

30440235 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30440235 is a deficient number, since it is larger than the sum of its proper divisors (25500885).

30440235 is a wasteful number, since it uses less digits than its factorization.

30440235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 30440235 is about 5517.2669864707. The cubic root of 30440235 is about 312.2357787952.

Adding to 30440235 its reverse (53204403), we get a palindrome (83644638).

The spelling of 30440235 in words is "thirty million, four hundred forty thousand, two hundred thirty-five".