30689340 has 48 divisors (see below), whose sum is σ = 93744000. Its totient is φ = 7439680.

The previous prime is 30689339. The next prime is 30689341. The reversal of 30689340 is 4398603.

It is an interprime number because it is at equal distance from previous prime (30689339) and next prime (30689341).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30689341) 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 15 ways as a sum of consecutive naturals, for example, 22590 + ... + 23909.

It is an arithmetic number, because the mean of its divisors is an integer number (1953000).

Almost surely, 2^30689340 is an apocalyptic number.

30689340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30689340 is an abundant number, since it is smaller than the sum of its proper divisors (63054660).

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

30689340 is a wasteful number, since it uses less digits than its factorization.

30689340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46522 (or 46520 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 30689340 is about 5539.7960251258. The cubic root of 30689340 is about 313.0851840402.

The spelling of 30689340 in words is "thirty million, six hundred eighty-nine thousand, three hundred forty".