2209734 has 32 divisors (see below), whose sum is σ = 4961280. Its totient is φ = 729000.

The previous prime is 2209721. The next prime is 2209741. The reversal of 2209734 is 4379022.

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

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2209698 and 2209707.

It is a congruent number.

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, 8019 + ... + 8289.

It is an arithmetic number, because the mean of its divisors is an integer number (155040).

2^2209734 is an apocalyptic number.

2209734 is an abundant number, since it is smaller than the sum of its proper divisors (2751546).

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

2209734 is a wasteful number, since it uses less digits than its factorization.

2209734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 2209734 is about 1486.5174065580. The cubic root of 2209734 is about 130.2506800092.

The spelling of 2209734 in words is "two million, two hundred nine thousand, seven hundred thirty-four".