30477948 has 12 divisors (see below), whose sum is σ = 71115240. Its totient is φ = 10159312.

The previous prime is 30477947. The next prime is 30477959. The reversal of 30477948 is 84977403.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×30477948³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30477947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269903 + ... + 1269926.

It is an arithmetic number, because the mean of its divisors is an integer number (5926270).

Almost surely, 2^30477948 is an apocalyptic number.

It is an amenable number.

30477948 is an abundant number, since it is smaller than the sum of its proper divisors (40637292).

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

30477948 is a wasteful number, since it uses less digits than its factorization.

30477948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539836 (or 2539834 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 30477948 is about 5520.6836533169. The cubic root of 30477948 is about 312.3646705768.

The spelling of 30477948 in words is "thirty million, four hundred seventy-seven thousand, nine hundred forty-eight".