20278192248 has 48 divisors (see below), whose sum is σ = 54942147000. Its totient is φ = 6756684480.

The previous prime is 20278192247. The next prime is 20278192271. The reversal of 20278192248 is 84229187202.

It is a happy number.

It is a super-2 number, since 2×20278192248² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20278192243) 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, 128283 + ... + 238773.

Almost surely, 2^20278192248 is an apocalyptic number.

It is an amenable number.

20278192248 is an abundant number, since it is smaller than the sum of its proper divisors (34663954752).

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

20278192248 is a wasteful number, since it uses less digits than its factorization.

20278192248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113052 (or 113045 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 20278192248 in words is "twenty billion, two hundred seventy-eight million, one hundred ninety-two thousand, two hundred forty-eight".