30295040 has 88 divisors (see below), whose sum is σ = 74625432. Its totient is φ = 11796480.

The previous prime is 30295033. The next prime is 30295043. The reversal of 30295040 is 4059203.

It can be written as a sum of positive squares in 4 ways, for example, as 1024 + 30294016 = 32^2 + 5504^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30294997 and 30295015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30295043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312272 + ... + 312368.

Almost surely, 2^30295040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30295040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37312716).

30295040 is an abundant number, since it is smaller than the sum of its proper divisors (44330392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30295040 is an equidigital number, since it uses as much as digits as its factorization.

30295040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30295040 is about 5504.0930224697. The cubic root of 30295040 is about 311.7385493241.

The spelling of 30295040 in words is "thirty million, two hundred ninety-five thousand, forty".