8738420 has 18 divisors (see below), whose sum is σ = 18378486. Its totient is φ = 3490080.

The previous prime is 8738407. The next prime is 8738437. The reversal of 8738420 is 248378.

It can be written as a sum of positive squares in 3 ways, for example, as 3083536 + 5654884 = 1756^2 + 2378^2 .

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12890 + ... + 13550.

It is an arithmetic number, because the mean of its divisors is an integer number (1021027).

Almost surely, 2^8738420 is an apocalyptic number.

It is an amenable number.

8738420 is an abundant number, since it is smaller than the sum of its proper divisors (9640066).

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

8738420 is an equidigital number, since it uses as much as digits as its factorization.

8738420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 8738420 is about 2956.0818662547. The cubic root of 8738420 is about 205.9733210808.

The spelling of 8738420 in words is "eight million, seven hundred thirty-eight thousand, four hundred twenty".