30872405 has 8 divisors (see below), whose sum is σ = 37654584. Its totient is φ = 24292800.

The previous prime is 30872383. The next prime is 30872411. The reversal of 30872405 is 50427803.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2845969 + 28026436 = 1687^2 + 5294^2 .

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

It is not a de Polignac number, because 30872405 - 2¹² = 30868309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50306 + ... + 50915.

It is an arithmetic number, because the mean of its divisors is an integer number (4706823).

Almost surely, 2^30872405 is an apocalyptic number.

It is an amenable number.

30872405 is a deficient number, since it is larger than the sum of its proper divisors (6782179).

30872405 is a wasteful number, since it uses less digits than its factorization.

30872405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101287.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 30872405 is about 5556.2941786770. The cubic root of 30872405 is about 313.7064785164.

The spelling of 30872405 in words is "thirty million, eight hundred seventy-two thousand, four hundred five".