1000223400 has 96 divisors (see below), whose sum is σ = 3382596000. Its totient is φ = 242476800.

The previous prime is 1000223377. The next prime is 1000223417. The reversal of 1000223400 is 43220001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69175 + ... + 82374.

It is an arithmetic number, because the mean of its divisors is an integer number (35235375).

Almost surely, 2^1000223400 is an apocalyptic number.

1000223400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000223400 is an abundant number, since it is smaller than the sum of its proper divisors (2382372600).

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

1000223400 is a wasteful number, since it uses less digits than its factorization.

1000223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151579 (or 151570 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1000223400 is about 31626.3086685753. The cubic root of 1000223400 is about 1000.0744611221.

Adding to 1000223400 its reverse (43220001), we get a palindrome (1043443401).

The spelling of 1000223400 in words is "one billion, two hundred twenty-three thousand, four hundred".