30478049280 has 896 divisors, whose sum is σ = 128841154560. Its totient is φ = 6688604160.

The previous prime is 30478049269. The next prime is 30478049339. The reversal of 30478049280 is 8294087403.

30478049280 is a `hidden beast` number, since 3 + 0 + 4 + 7 + 80 + 492 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (896).

It is a super-2 number, since 2×30478049280² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 239984577 + ... + 239984703.

Almost surely, 2^30478049280 is an apocalyptic number.

30478049280 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 30478049280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64420577280).

30478049280 is an abundant number, since it is smaller than the sum of its proper divisors (98363105280).

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

30478049280 is a wasteful number, since it uses less digits than its factorization.

30478049280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 30478049280 in words is "thirty billion, four hundred seventy-eight million, forty-nine thousand, two hundred eighty".