2190156 has 24 divisors (see below), whose sum is σ = 5139120. Its totient is φ = 725952.

The previous prime is 2190143. The next prime is 2190157. The reversal of 2190156 is 6510912.

It is not an unprimeable number, because it can be changed into a prime (2190157) 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, 2350 + ... + 3146.

It is an arithmetic number, because the mean of its divisors is an integer number (214130).

2^2190156 is an apocalyptic number.

It is an amenable number.

2190156 is an abundant number, since it is smaller than the sum of its proper divisors (2948964).

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

2190156 is a wasteful number, since it uses less digits than its factorization.

2190156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 2190156 is about 1479.9175652718. The cubic root of 2190156 is about 129.8648694470.

It can be divided in two parts, 2190 and 156, that added together give a triangular number (2346 = T₆₈).

The spelling of 2190156 in words is "two million, one hundred ninety thousand, one hundred fifty-six".