993472820 has 12 divisors (see below), whose sum is σ = 2086292964. Its totient is φ = 397389120.

The previous prime is 993472811. The next prime is 993472849. The reversal of 993472820 is 28274399.

It can be written as a sum of positive squares in 2 ways, for example, as 771283984 + 222188836 = 27772^2 + 14906^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24836801 + ... + 24836840.

It is an arithmetic number, because the mean of its divisors is an integer number (173857747).

Almost surely, 2^993472820 is an apocalyptic number.

It is an amenable number.

993472820 is an abundant number, since it is smaller than the sum of its proper divisors (1092820144).

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

993472820 is a wasteful number, since it uses less digits than its factorization.

993472820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49673650 (or 49673648 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 993472820 is about 31519.4038649210. The cubic root of 993472820 is about 997.8195223060.

The spelling of 993472820 in words is "nine hundred ninety-three million, four hundred seventy-two thousand, eight hundred twenty".