1098223456 has 48 divisors (see below), whose sum is σ = 2391959808. Its totient is φ = 492150400.

The previous prime is 1098223439. The next prime is 1098223457. The reversal of 1098223456 is 6543228901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098223457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3021 + ... + 46963.

It is an arithmetic number, because the mean of its divisors is an integer number (49832496).

Almost surely, 2^1098223456 is an apocalyptic number.

1098223456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098223456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195979904).

1098223456 is an abundant number, since it is smaller than the sum of its proper divisors (1293736352).

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

1098223456 is a wasteful number, since it uses less digits than its factorization.

1098223456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44035 (or 44027 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1098223456 is about 33139.4546726406. The cubic root of 1098223456 is about 1031.7240914560.

Subtracting 1098223456 from its reverse (6543228901), we obtain a palindrome (5445005445).

The spelling of 1098223456 in words is "one billion, ninety-eight million, two hundred twenty-three thousand, four hundred fifty-six".