27900392880 has 320 divisors, whose sum is σ = 92210669568. Its totient is φ = 6963855360.

The previous prime is 27900392879. The next prime is 27900392881. The reversal of 27900392880 is 8829300972.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27900392879) and next prime (27900392881).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (27900392881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100723302 + ... + 100723578.

Almost surely, 2^27900392880 is an apocalyptic number.

27900392880 is a gapful number since it is divisible by the number (20) 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 27900392880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46105334784).

27900392880 is an abundant number, since it is smaller than the sum of its proper divisors (64310276688).

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

27900392880 is a wasteful number, since it uses less digits than its factorization.

27900392880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 27900392880 in words is "twenty-seven billion, nine hundred million, three hundred ninety-two thousand, eight hundred eighty".