1906250 has 28 divisors (see below), whose sum is σ = 3632766. Its totient is φ = 750000.

The previous prime is 1906243. The next prime is 1906259. The reversal of 1906250 is 526091.

It can be written as a sum of positive squares in 7 ways, for example, as 1545049 + 361201 = 1243^2 + 601^2 .

It is a plaindrome in base 14.

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (1906259) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 31220 + ... + 31280.

2^1906250 is an apocalyptic number.

1906250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1906250 is a deficient number, since it is larger than the sum of its proper divisors (1726516).

1906250 is an frugal number, since it uses more digits than its factorization.

1906250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1906250 is about 1380.6701271484. The cubic root of 1906250 is about 123.9918915961.

The spelling of 1906250 in words is "one million, nine hundred six thousand, two hundred fifty".