30880405 has 8 divisors (see below), whose sum is σ = 37097784. Its totient is φ = 24676800.

The previous prime is 30880403. The next prime is 30880411. The reversal of 30880405 is 50408803.

It can be written as a sum of positive squares in 4 ways, for example, as 10150596 + 20729809 = 3186^2 + 4553^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30880405 - 2¹ = 30880403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30880403) 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, 2395 + ... + 8215.

It is an arithmetic number, because the mean of its divisors is an integer number (4637223).

Almost surely, 2^30880405 is an apocalyptic number.

It is an amenable number.

30880405 is a deficient number, since it is larger than the sum of its proper divisors (6217379).

30880405 is a wasteful number, since it uses less digits than its factorization.

30880405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 30880405 is about 5557.0140363328. The cubic root of 30880405 is about 313.7335732102.

The spelling of 30880405 in words is "thirty million, eight hundred eighty thousand, four hundred five".