1905216 has 28 divisors (see below), whose sum is σ = 5041392. Its totient is φ = 635008.

The previous prime is 1905199. The next prime is 1905247. The reversal of 1905216 is 6125091.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4770 + ... + 5153.

2^1905216 is an apocalyptic number.

1905216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1905216 is an abundant number, since it is smaller than the sum of its proper divisors (3136176).

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

1905216 is an equidigital number, since it uses as much as digits as its factorization.

1905216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9938 (or 9928 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1905216 is about 1380.2956205103. The cubic root of 1905216 is about 123.9694687232.

The spelling of 1905216 in words is "one million, nine hundred five thousand, two hundred sixteen".