30880692 has 36 divisors (see below), whose sum is σ = 79724736. Its totient is φ = 10074000.

The previous prime is 30880627. The next prime is 30880693. The reversal of 30880692 is 29608803.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30880693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7434 + ... + 10817.

It is an arithmetic number, because the mean of its divisors is an integer number (2214576).

Almost surely, 2^30880692 is an apocalyptic number.

It is an amenable number.

30880692 is an abundant number, since it is smaller than the sum of its proper divisors (48844044).

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

30880692 is a wasteful number, since it uses less digits than its factorization.

30880692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18308 (or 18303 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30880692 is about 5557.0398594935. The cubic root of 30880692 is about 313.7345451454.

The spelling of 30880692 in words is "thirty million, eight hundred eighty thousand, six hundred ninety-two".