19807467228 has 36 divisors (see below), whose sum is σ = 50098328280. Its totient is φ = 6598605216.

The previous prime is 19807467223. The next prime is 19807467233. The reversal of 19807467228 is 82276470891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19807467223) and next prime (19807467233).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19807467223) 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, 99450 + ... + 222497.

It is an arithmetic number, because the mean of its divisors is an integer number (1391620230).

Almost surely, 2^19807467228 is an apocalyptic number.

19807467228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19807467228 is an abundant number, since it is smaller than the sum of its proper divisors (30290861052).

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

19807467228 is a wasteful number, since it uses less digits than its factorization.

19807467228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323666 (or 323661 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 19807467228 in words is "nineteen billion, eight hundred seven million, four hundred sixty-seven thousand, two hundred twenty-eight".