30801057 has 32 divisors (see below), whose sum is σ = 49248000. Its totient is φ = 17103744.

The previous prime is 30801049. The next prime is 30801077. The reversal of 30801057 is 75010803.

It is not a de Polignac number, because 30801057 - 2³ = 30801049 is a prime.

It is a super-2 number, since 2×30801057² = 1897410224634498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30801037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37669 + ... + 38477.

It is an arithmetic number, because the mean of its divisors is an integer number (1539000).

Almost surely, 2^30801057 is an apocalyptic number.

30801057 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30801057 is a deficient number, since it is larger than the sum of its proper divisors (18446943).

30801057 is an equidigital number, since it uses as much as digits as its factorization.

30801057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 30801057 is about 5549.8699984774. The cubic root of 30801057 is about 313.4646272115.

The spelling of 30801057 in words is "thirty million, eight hundred one thousand, fifty-seven".