223870812 has 36 divisors (see below), whose sum is σ = 574173768. Its totient is φ = 67839200.

The previous prime is 223870811. The next prime is 223870813. The reversal of 223870812 is 218078322.

It is an interprime number because it is at equal distance from previous prime (223870811) and next prime (223870813).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223870811) 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, 75639 + ... + 78542.

Almost surely, 2^223870812 is an apocalyptic number.

223870812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

223870812 is an abundant number, since it is smaller than the sum of its proper divisors (350302956).

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

223870812 is a wasteful number, since it uses less digits than its factorization.

223870812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154210 (or 154197 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 223870812 is about 14962.3130564763. The cubic root of 223870812 is about 607.2010186918.

The spelling of 223870812 in words is "two hundred twenty-three million, eight hundred seventy thousand, eight hundred twelve".