30478648140 has 96 divisors (see below), whose sum is σ = 95160381120. Its totient is φ = 8098675200.

The previous prime is 30478648133. The next prime is 30478648141. The reversal of 30478648140 is 4184687403.

30478648140 is a `hidden beast` number, since 3 + 0 + 478 + 64 + 81 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (30478648141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51310 + ... + 252170.

It is an arithmetic number, because the mean of its divisors is an integer number (991253970).

Almost surely, 2^30478648140 is an apocalyptic number.

30478648140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30478648140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47580190560).

30478648140 is an abundant number, since it is smaller than the sum of its proper divisors (64681732980).

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

30478648140 is a wasteful number, since it uses less digits than its factorization.

30478648140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201160 (or 201152 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 30478648140 in words is "thirty billion, four hundred seventy-eight million, six hundred forty-eight thousand, one hundred forty".