4251906 has 32 divisors (see below), whose sum is σ = 9590400. Its totient is φ = 1396080.

The previous prime is 4251889. The next prime is 4251917. The reversal of 4251906 is 6091524.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 4251906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3280 + ... + 4388.

It is an arithmetic number, because the mean of its divisors is an integer number (299700).

Almost surely, 2^4251906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4251906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4795200).

4251906 is an abundant number, since it is smaller than the sum of its proper divisors (5338494).

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

4251906 is a wasteful number, since it uses less digits than its factorization.

4251906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191 (or 1185 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 4251906 is about 2062.0150338928. The cubic root of 4251906 is about 162.0048009551.

The spelling of 4251906 in words is "four million, two hundred fifty-one thousand, nine hundred six".