1906432 has 36 divisors (see below), whose sum is σ = 4157496. Its totient is φ = 865280.

The previous prime is 1906417. The next prime is 1906439. The reversal of 1906432 is 2346091.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1906397 and 1906406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2478 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (115486).

2^1906432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2078748).

1906432 is an abundant number, since it is smaller than the sum of its proper divisors (2251064).

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

1906432 is an equidigital number, since it uses as much as digits as its factorization.

1906432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1906432 is about 1380.7360355984. The cubic root of 1906432 is about 123.9958375294.

The spelling of 1906432 in words is "one million, nine hundred six thousand, four hundred thirty-two".