2070138 has 32 divisors (see below), whose sum is σ = 4939776. Its totient is φ = 565488.

The previous prime is 2070137. The next prime is 2070143. The reversal of 2070138 is 8310702.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2070137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106 + ... + 2037.

It is an arithmetic number, because the mean of its divisors is an integer number (154368).

2^2070138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2070138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2469888).

2070138 is an abundant number, since it is smaller than the sum of its proper divisors (2869638).

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

2070138 is a wasteful number, since it uses less digits than its factorization.

2070138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2070138 is about 1438.7974145098. The cubic root of 2070138 is about 127.4480218732.

The spelling of 2070138 in words is "two million, seventy thousand, one hundred thirty-eight".