30557090 has 32 divisors (see below), whose sum is σ = 56738880. Its totient is φ = 11841984.

The previous prime is 30557081. The next prime is 30557099. The reversal of 30557090 is 9075503.

It is an interprime number because it is at equal distance from previous prime (30557081) and next prime (30557099).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30557099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76772 + ... + 77168.

It is an arithmetic number, because the mean of its divisors is an integer number (1773090).

Almost surely, 2^30557090 is an apocalyptic number.

30557090 is a deficient number, since it is larger than the sum of its proper divisors (26181790).

30557090 is a wasteful number, since it uses less digits than its factorization.

30557090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 30557090 is about 5527.8467779055. The cubic root of 30557090 is about 312.6348090365.

The spelling of 30557090 in words is "thirty million, five hundred fifty-seven thousand, ninety".