30138480 has 100 divisors (see below), whose sum is σ = 104697912. Its totient is φ = 8035200.

The previous prime is 30138473. The next prime is 30138499. The reversal of 30138480 is 8483103.

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 19 ways as a sum of consecutive naturals, for example, 4155 + ... + 8805.

Almost surely, 2^30138480 is an apocalyptic number.

30138480 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 30138480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52348956).

30138480 is an abundant number, since it is smaller than the sum of its proper divisors (74559432).

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

30138480 is a wasteful number, since it uses less digits than its factorization.

30138480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30138480 is about 5489.8524570338. The cubic root of 30138480 is about 311.2006163486.

It can be divided in two parts, 301 and 38480, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 30138480 in words is "thirty million, one hundred thirty-eight thousand, four hundred eighty".