30023280 has 360 divisors, whose sum is σ = 125697312. Its totient is φ = 6386688.

The previous prime is 30023261. The next prime is 30023293. The reversal of 30023280 is 8232003.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 811422 + ... + 811458.

Almost surely, 2^30023280 is an apocalyptic number.

30023280 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 30023280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62848656).

30023280 is an abundant number, since it is smaller than the sum of its proper divisors (95674032).

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

30023280 is a wasteful number, since it uses less digits than its factorization.

30023280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30023280 is about 5479.3503264529. The cubic root of 30023280 is about 310.8036035618.

Adding to 30023280 its reverse (8232003), we get a palindrome (38255283).

It can be divided in two parts, 30023 and 280, that added together give a palindrome (30303).

The spelling of 30023280 in words is "thirty million, twenty-three thousand, two hundred eighty".