1864434 has 64 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 499200.

The previous prime is 1864427. The next prime is 1864453. The reversal of 1864434 is 4344681.

It is a super-2 number, since 2×1864434² = 6952228280712, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35152 + ... + 35204.

It is an arithmetic number, because the mean of its divisors is an integer number (71442).

2^1864434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1864434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144).

1864434 is an abundant number, since it is smaller than the sum of its proper divisors (2707854).

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

1864434 is a wasteful number, since it uses less digits than its factorization.

1864434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123.

The product of its digits is 9216, while the sum is 30.

The square root of 1864434 is about 1365.4427853264. The cubic root of 1864434 is about 123.0785406238.

The spelling of 1864434 in words is "one million, eight hundred sixty-four thousand, four hundred thirty-four".