30147948 has 36 divisors (see below), whose sum is σ = 76892088. Its totient is φ = 9959040.

The previous prime is 30147913. The next prime is 30147961. The reversal of 30147948 is 84974103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×30147948² = 1817797537221408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 363 + ... + 7773.

Almost surely, 2^30147948 is an apocalyptic number.

It is an amenable number.

30147948 is an abundant number, since it is smaller than the sum of its proper divisors (46744140).

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

30147948 is a wasteful number, since it uses less digits than its factorization.

30147948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534 (or 7529 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 30147948 is about 5490.7147075768. The cubic root of 30147948 is about 311.2332008159.

The spelling of 30147948 in words is "thirty million, one hundred forty-seven thousand, nine hundred forty-eight".