423728814 has 16 divisors (see below), whose sum is σ = 861351120. Its totient is φ = 138927360.

The previous prime is 423728813. The next prime is 423728821. The reversal of 423728814 is 418827324.

It is a super-2 number, since 2×423728814² = 359092215627693192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423728813) 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, 578499 + ... + 579230.

It is an arithmetic number, because the mean of its divisors is an integer number (53834445).

Almost surely, 2^423728814 is an apocalyptic number.

423728814 is an abundant number, since it is smaller than the sum of its proper divisors (437622306).

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

423728814 is a wasteful number, since it uses less digits than its factorization.

423728814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157795.

The product of its digits is 86016, while the sum is 39.

The square root of 423728814 is about 20584.6742505195. The cubic root of 423728814 is about 751.0969512595.

The spelling of 423728814 in words is "four hundred twenty-three million, seven hundred twenty-eight thousand, eight hundred fourteen".