30860940 has 192 divisors, whose sum is σ = 104509440. Its totient is φ = 6716160.

The previous prime is 30860911. The next prime is 30860941. The reversal of 30860940 is 4906803.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30860898 and 30860907.

It is not an unprimeable number, because it can be changed into a prime (30860941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 288367 + ... + 288473.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^30860940 is an apocalyptic number.

30860940 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 30860940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52254720).

30860940 is an abundant number, since it is smaller than the sum of its proper divisors (73648500).

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

30860940 is a wasteful number, since it uses less digits than its factorization.

30860940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30860940 is about 5555.2623700416. The cubic root of 30860940 is about 313.6676402713.

The spelling of 30860940 in words is "thirty million, eight hundred sixty thousand, nine hundred forty".