20737420228 has 12 divisors (see below), whose sum is σ = 41474840512. Its totient is φ = 8887465800.

The previous prime is 20737420201. The next prime is 20737420243. The reversal of 20737420228 is 82202473702.

It is a happy number.

20737420228 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370311048 + ... + 370311103.

Almost surely, 2^20737420228 is an apocalyptic number.

20737420228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20737420228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20737420228 is a wasteful number, since it uses less digits than its factorization.

20737420228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740622162 (or 740622160 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 20737420228 in words is "twenty billion, seven hundred thirty-seven million, four hundred twenty thousand, two hundred twenty-eight".