30855804 has 48 divisors (see below), whose sum is σ = 83075328. Its totient is φ = 8731008.

The previous prime is 30855787. The next prime is 30855823. The reversal of 30855804 is 40855803.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7272 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (1730736).

Almost surely, 2^30855804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30855804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41537664).

30855804 is an abundant number, since it is smaller than the sum of its proper divisors (52219524).

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

30855804 is a wasteful number, since it uses less digits than its factorization.

30855804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554 (or 3552 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 30855804 is about 5554.8000864118. The cubic root of 30855804 is about 313.6502387018.

Subtracting 30855804 from its reverse (40855803), we obtain a palindrome (9999999).

The spelling of 30855804 in words is "thirty million, eight hundred fifty-five thousand, eight hundred four".