19552220 has 12 divisors (see below), whose sum is σ = 41059704. Its totient is φ = 7820880.

The previous prime is 19552213. The next prime is 19552223. The reversal of 19552220 is 2225591.

It is a self number, because there is not a number n which added to its sum of digits gives 19552220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19552223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488786 + ... + 488825.

It is an arithmetic number, because the mean of its divisors is an integer number (3421642).

Almost surely, 2^19552220 is an apocalyptic number.

19552220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19552220 is an abundant number, since it is smaller than the sum of its proper divisors (21507484).

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

19552220 is a wasteful number, since it uses less digits than its factorization.

19552220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977620 (or 977618 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 19552220 is about 4421.7892306169. The cubic root of 19552220 is about 269.4006825713.

The spelling of 19552220 in words is "nineteen million, five hundred fifty-two thousand, two hundred twenty".