30492805 has 16 divisors (see below), whose sum is σ = 42793344. Its totient is φ = 20422080.

The previous prime is 30492743. The next prime is 30492811. The reversal of 30492805 is 50829403.

It is not a de Polignac number, because 30492805 - 2⁷ = 30492677 is a prime.

It is a super-2 number, since 2×30492805² = 1859622313536050, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 8626 + ... + 11635.

It is an arithmetic number, because the mean of its divisors is an integer number (2674584).

Almost surely, 2^30492805 is an apocalyptic number.

30492805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30492805 is a deficient number, since it is larger than the sum of its proper divisors (12300539).

30492805 is a wasteful number, since it uses less digits than its factorization.

30492805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20316.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 30492805 is about 5522.0290654795. The cubic root of 30492805 is about 312.4154181757.

The spelling of 30492805 in words is "thirty million, four hundred ninety-two thousand, eight hundred five".