30421248 has 144 divisors (see below), whose sum is σ = 95462976. Its totient is φ = 8478720.

The previous prime is 30421247. The next prime is 30421271. The reversal of 30421248 is 84212403.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (30421247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109686 + ... + 109962.

Almost surely, 2^30421248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30421248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47731488).

30421248 is an abundant number, since it is smaller than the sum of its proper divisors (65041728).

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

30421248 is a wasteful number, since it uses less digits than its factorization.

30421248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 30421248 is about 5515.5460291797. The cubic root of 30421248 is about 312.1708466008.

It can be divided in two parts, 3042 and 1248, that multiplied together give a cube (3796416 = 156³).

The spelling of 30421248 in words is "thirty million, four hundred twenty-one thousand, two hundred forty-eight".