30898040 has 16 divisors (see below), whose sum is σ = 69520680. Its totient is φ = 12359200.

The previous prime is 30898033. The next prime is 30898067. The reversal of 30898040 is 4089803.

It is a junction number, because it is equal to n+sod(n) for n = 30897988 and 30898006.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 386186 + ... + 386265.

Almost surely, 2^30898040 is an apocalyptic number.

It is an amenable number.

30898040 is an abundant number, since it is smaller than the sum of its proper divisors (38622640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30898040 is a wasteful number, since it uses less digits than its factorization.

30898040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772462 (or 772458 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 30898040 is about 5558.6005433022. The cubic root of 30898040 is about 313.7932835530.

The spelling of 30898040 in words is "thirty million, eight hundred ninety-eight thousand, forty".