5394401280 has 384 divisors, whose sum is σ = 19459440000. Its totient is φ = 1417347072.

The previous prime is 5394401279. The next prime is 5394401281. The reversal of 5394401280 is 821044935.

5394401280 is a `hidden beast` number, since 539 + 4 + 40 + 1 + 2 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (5394401279) and next prime (5394401281).

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5394401281) 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, 30136231 + ... + 30136409.

It is an arithmetic number, because the mean of its divisors is an integer number (50675625).

Almost surely, 2^5394401280 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 5394401280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9729720000).

5394401280 is an abundant number, since it is smaller than the sum of its proper divisors (14065038720).

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

5394401280 is a wasteful number, since it uses less digits than its factorization.

5394401280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 5394401280 is about 73446.5879398083. The cubic root of 5394401280 is about 1753.8041089431.

The spelling of 5394401280 in words is "five billion, three hundred ninety-four million, four hundred one thousand, two hundred eighty".