30357812 has 12 divisors (see below), whose sum is σ = 53201316. Its totient is φ = 15157440.

The previous prime is 30357791. The next prime is 30357823. The reversal of 30357812 is 21875303.

It can be written as a sum of positive squares in 2 ways, for example, as 1240996 + 29116816 = 1114^2 + 5396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943 + ... + 8030.

It is an arithmetic number, because the mean of its divisors is an integer number (4433443).

Almost surely, 2^30357812 is an apocalyptic number.

It is an amenable number.

30357812 is a deficient number, since it is larger than the sum of its proper divisors (22843504).

30357812 is a wasteful number, since it uses less digits than its factorization.

30357812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10738 (or 10736 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 30357812 is about 5509.7923735836. The cubic root of 30357812 is about 311.9537105335.

The spelling of 30357812 in words is "thirty million, three hundred fifty-seven thousand, eight hundred twelve".