30469140 has 144 divisors (see below), whose sum is σ = 103194000. Its totient is φ = 7225344.

The previous prime is 30469139. The next prime is 30469157. The reversal of 30469140 is 4196403.

It can be written as a sum of positive squares in 8 ways, for example, as 1179396 + 29289744 = 1086^2 + 5412^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67636 + ... + 68084.

It is an arithmetic number, because the mean of its divisors is an integer number (716625).

Almost surely, 2^30469140 is an apocalyptic number.

30469140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30469140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51597000).

30469140 is an abundant number, since it is smaller than the sum of its proper divisors (72724860).

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

30469140 is a wasteful number, since it uses less digits than its factorization.

30469140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 30469140 is about 5519.8858683853. The cubic root of 30469140 is about 312.3345769815.

The spelling of 30469140 in words is "thirty million, four hundred sixty-nine thousand, one hundred forty".