30478138632 has 48 divisors (see below), whose sum is σ = 82559287980. Its totient is φ = 10157616000.

The previous prime is 30478138631. The next prime is 30478138673. The reversal of 30478138632 is 23683187403.

30478138632 is a `hidden beast` number, since 3 + 0 + 4 + 7 + 8 + 1 + 3 + 8 + 632 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25566091236 + 4912047396 = 159894^2 + 70086^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30478138631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 420082 + ... + 487262.

Almost surely, 2^30478138632 is an apocalyptic number.

It is an amenable number.

30478138632 is an abundant number, since it is smaller than the sum of its proper divisors (52081149348).

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

30478138632 is a wasteful number, since it uses less digits than its factorization.

30478138632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73494 (or 73487 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 30478138632 in words is "thirty billion, four hundred seventy-eight million, one hundred thirty-eight thousand, six hundred thirty-two".