30750006 has 32 divisors (see below), whose sum is σ = 71140608. Its totient is φ = 8678880.

The previous prime is 30750001. The next prime is 30750019. The reversal of 30750006 is 60005703.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30750001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925 + ... + 7896.

It is an arithmetic number, because the mean of its divisors is an integer number (2223144).

Almost surely, 2^30750006 is an apocalyptic number.

30750006 is an abundant number, since it is smaller than the sum of its proper divisors (40390602).

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

30750006 is a wasteful number, since it uses less digits than its factorization.

30750006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8916.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 30750006 is about 5545.2687942065. The cubic root of 30750006 is about 313.2913481796.

Adding to 30750006 its reverse (60005703), we get a palindrome (90755709).

The spelling of 30750006 in words is "thirty million, seven hundred fifty thousand, six".