8212390 has 16 divisors (see below), whose sum is σ = 14897520. Its totient is φ = 3259360.

The previous prime is 8212381. The next prime is 8212397. The reversal of 8212390 is 932128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212397) 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, 1825 + ... + 4444.

It is an arithmetic number, because the mean of its divisors is an integer number (931095).

Almost surely, 2^8212390 is an apocalyptic number.

8212390 is a deficient number, since it is larger than the sum of its proper divisors (6685130).

8212390 is a wasteful number, since it uses less digits than its factorization.

8212390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6407.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 8212390 is about 2865.7267839067. The cubic root of 8212390 is about 201.7544806495.

The spelling of 8212390 in words is "eight million, two hundred twelve thousand, three hundred ninety".