27428369380 has 12 divisors (see below), whose sum is σ = 57599575740. Its totient is φ = 10971347744.

The previous prime is 27428369363. The next prime is 27428369399. The reversal of 27428369380 is 8396382472.

It can be written as a sum of positive squares in 2 ways, for example, as 6166646784 + 21261722596 = 78528^2 + 145814^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685709215 + ... + 685709254.

It is an arithmetic number, because the mean of its divisors is an integer number (4799964645).

Almost surely, 2^27428369380 is an apocalyptic number.

27428369380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27428369380 is an abundant number, since it is smaller than the sum of its proper divisors (30171206360).

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

27428369380 is a wasteful number, since it uses less digits than its factorization.

27428369380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371418478 (or 1371418476 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 27428369380 in words is "twenty-seven billion, four hundred twenty-eight million, three hundred sixty-nine thousand, three hundred eighty".