814728020 has 24 divisors (see below), whose sum is σ = 1712448864. Its totient is φ = 325601696.

The previous prime is 814727989. The next prime is 814728023. The reversal of 814728020 is 20827418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814728023) 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, 5747 + ... + 40773.

It is an arithmetic number, because the mean of its divisors is an integer number (71352036).

Almost surely, 2^814728020 is an apocalyptic number.

It is an amenable number.

814728020 is an abundant number, since it is smaller than the sum of its proper divisors (897720844).

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

814728020 is a wasteful number, since it uses less digits than its factorization.

814728020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36199 (or 36197 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 814728020 is about 28543.4409278209. The cubic root of 814728020 is about 933.9799450656.

The spelling of 814728020 in words is "eight hundred fourteen million, seven hundred twenty-eight thousand, twenty".