30940000 has 240 divisors, whose sum is σ = 99193248. Its totient is φ = 9216000.

The previous prime is 30939967. The next prime is 30940001. The reversal of 30940000 is 4903.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30940001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1819992 + ... + 1820008.

Almost surely, 2^30940000 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 30940000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49596624).

30940000 is an abundant number, since it is smaller than the sum of its proper divisors (68253248).

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

30940000 is a wasteful number, since it uses less digits than its factorization.

30940000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 30940000 is about 5562.3735940694. The cubic root of 30940000 is about 313.9352646242.

Adding to 30940000 its reverse (4903), we get a palindrome (30944903).

The spelling of 30940000 in words is "thirty million, nine hundred forty thousand".