2150840 has 32 divisors (see below), whose sum is σ = 5125680. Its totient is φ = 809472.

The previous prime is 2150839. The next prime is 2150849. The reversal of 2150840 is 480512.

2150840 = T₅₂₈ + T₅₂₉ + ... + T₅₄₂.

It is a super-2 number, since 2×2150840² = 9252225411200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902 + ... + 2261.

2^2150840 is an apocalyptic number.

2150840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2150840 is an abundant number, since it is smaller than the sum of its proper divisors (2974840).

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

2150840 is a wasteful number, since it uses less digits than its factorization.

2150840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191 (or 3187 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2150840 is about 1466.5742395119. The cubic root of 2150840 is about 129.0830945117.

The spelling of 2150840 in words is "two million, one hundred fifty thousand, eight hundred forty".