30406560 has 48 divisors (see below), whose sum is σ = 95782176. Its totient is φ = 8108288.

The previous prime is 30406553. The next prime is 30406561. The reversal of 30406560 is 6560403.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30406560.

It is not an unprimeable number, because it can be changed into a prime (30406561) 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, 31194 + ... + 32153.

It is an arithmetic number, because the mean of its divisors is an integer number (1995462).

Almost surely, 2^30406560 is an apocalyptic number.

30406560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30406560 is an abundant number, since it is smaller than the sum of its proper divisors (65375616).

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

30406560 is a wasteful number, since it uses less digits than its factorization.

30406560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63365 (or 63357 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 30406560 is about 5514.2143592719. The cubic root of 30406560 is about 312.1205976922.

Adding to 30406560 its reverse (6560403), we get a palindrome (36966963).

The spelling of 30406560 in words is "thirty million, four hundred six thousand, five hundred sixty".