938366820 has 72 divisors (see below), whose sum is σ = 2885411256. Its totient is φ = 246799872.

The previous prime is 938366791. The next prime is 938366831. The reversal of 938366820 is 28663839.

It can be written as a sum of positive squares in 4 ways, for example, as 114447204 + 823919616 = 10698^2 + 28704^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22567 + ... + 48846.

Almost surely, 2^938366820 is an apocalyptic number.

938366820 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

938366820 is an abundant number, since it is smaller than the sum of its proper divisors (1947044436).

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

938366820 is a wasteful number, since it uses less digits than its factorization.

938366820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71501 (or 71496 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 938366820 is about 30632.7736256448. The cubic root of 938366820 is about 979.0184605344.

The spelling of 938366820 in words is "nine hundred thirty-eight million, three hundred sixty-six thousand, eight hundred twenty".