2138770 has 32 divisors (see below), whose sum is σ = 4261248. Its totient is φ = 768768.

The previous prime is 2138749. The next prime is 2138789. The reversal of 2138770 is 778312.

It is a happy number.

It is a super-2 number, since 2×2138770² = 9148674225800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3637 + ... + 4183.

It is an arithmetic number, because the mean of its divisors is an integer number (133164).

2^2138770 is an apocalyptic number.

2138770 is a deficient number, since it is larger than the sum of its proper divisors (2122478).

2138770 is a wasteful number, since it uses less digits than its factorization.

2138770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 2138770 is about 1462.4534180616. The cubic root of 2138770 is about 128.8411802662.

The spelling of 2138770 in words is "two million, one hundred thirty-eight thousand, seven hundred seventy".