30145392 has 80 divisors (see below), whose sum is σ = 89359360. Its totient is φ = 9720000.

The previous prime is 30145333. The next prime is 30145439. The reversal of 30145392 is 29354103.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12267 + ... + 14517.

It is an arithmetic number, because the mean of its divisors is an integer number (1116992).

Almost surely, 2^30145392 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 30145392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44679680).

30145392 is an abundant number, since it is smaller than the sum of its proper divisors (59213968).

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

30145392 is a wasteful number, since it uses less digits than its factorization.

30145392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2287 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 30145392 is about 5490.4819460590. The cubic root of 30145392 is about 311.2244049210.

Adding to 30145392 its reverse (29354103), we get a palindrome (59499495).

The spelling of 30145392 in words is "thirty million, one hundred forty-five thousand, three hundred ninety-two".