2215140 has 24 divisors (see below), whose sum is σ = 6202560. Its totient is φ = 590688.

The previous prime is 2215133. The next prime is 2215141. The reversal of 2215140 is 415122.

2215140 = T₂₉₁ + T₂₉₂ + ... + T₃₃₅.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2215141) 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, 18400 + ... + 18519.

It is an arithmetic number, because the mean of its divisors is an integer number (258440).

2^2215140 is an apocalyptic number.

2215140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215140 is an abundant number, since it is smaller than the sum of its proper divisors (3987420).

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

2215140 is a wasteful number, since it uses less digits than its factorization.

2215140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36931 (or 36929 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2215140 is about 1488.3346397904. The cubic root of 2215140 is about 130.3568106936.

The spelling of 2215140 in words is "two million, two hundred fifteen thousand, one hundred forty".