19226980 has 24 divisors (see below), whose sum is σ = 40554360. Its totient is φ = 7656960.

The previous prime is 19226951. The next prime is 19227007. The reversal of 19226980 is 8962291.

It can be written as a sum of positive squares in 4 ways, for example, as 3481956 + 15745024 = 1866^2 + 3968^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2826 + ... + 6814.

It is an arithmetic number, because the mean of its divisors is an integer number (1689765).

Almost surely, 2^19226980 is an apocalyptic number.

19226980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19226980 is an abundant number, since it is smaller than the sum of its proper divisors (21327380).

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

19226980 is a wasteful number, since it uses less digits than its factorization.

19226980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239 (or 4237 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 19226980 is about 4384.8580364705. The cubic root of 19226980 is about 267.8985470303.

It can be divided in two parts, 192 and 26980, that added together give a palindrome (27172).

The spelling of 19226980 in words is "nineteen million, two hundred twenty-six thousand, nine hundred eighty".