30420776 has 16 divisors (see below), whose sum is σ = 57227040. Its totient is φ = 15160240.

The previous prime is 30420773. The next prime is 30420799. The reversal of 30420776 is 67702403.

It is a super-2 number, since 2×30420776² = 1850847224884352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30420773) 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 3 ways as a sum of consecutive naturals, for example, 3626 + ... + 8601.

It is an arithmetic number, because the mean of its divisors is an integer number (3576690).

Almost surely, 2^30420776 is an apocalyptic number.

It is an amenable number.

30420776 is a deficient number, since it is larger than the sum of its proper divisors (26806264).

30420776 is a wasteful number, since it uses less digits than its factorization.

30420776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12544 (or 12540 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 30420776 is about 5515.5032408657. The cubic root of 30420776 is about 312.1692320998.

The spelling of 30420776 in words is "thirty million, four hundred twenty thousand, seven hundred seventy-six".