2145006 has 24 divisors (see below), whose sum is σ = 4675320. Its totient is φ = 710736.

The previous prime is 2144999. The next prime is 2145023. The reversal of 2145006 is 6005412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2145006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4621 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (194805).

2^2145006 is an apocalyptic number.

2145006 is an abundant number, since it is smaller than the sum of its proper divisors (2530314).

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

2145006 is a wasteful number, since it uses less digits than its factorization.

2145006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2145006 is about 1464.5838999525. The cubic root of 2145006 is about 128.9662792698.

The spelling of 2145006 in words is "two million, one hundred forty-five thousand, six".