30390745 has 32 divisors (see below), whose sum is σ = 45815040. Its totient is φ = 18800640.

The previous prime is 30390739. The next prime is 30390791. The reversal of 30390745 is 54709303.

It is not a de Polignac number, because 30390745 - 2⁹ = 30390233 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74101 + ... + 74509.

It is an arithmetic number, because the mean of its divisors is an integer number (1431720).

Almost surely, 2^30390745 is an apocalyptic number.

30390745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30390745 is a deficient number, since it is larger than the sum of its proper divisors (15424295).

30390745 is a wasteful number, since it uses less digits than its factorization.

30390745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 30390745 is about 5512.7801516113. The cubic root of 30390745 is about 312.0664751246.

The spelling of 30390745 in words is "thirty million, three hundred ninety thousand, seven hundred forty-five".