2157092 has 24 divisors (see below), whose sum is σ = 4421760. Its totient is φ = 901440.

The previous prime is 2157091. The next prime is 2157097. The reversal of 2157092 is 2907512.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2157091) 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, 209 + ... + 2087.

It is an arithmetic number, because the mean of its divisors is an integer number (184240).

2^2157092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2210880).

2157092 is an abundant number, since it is smaller than the sum of its proper divisors (2264668).

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

2157092 is a wasteful number, since it uses less digits than its factorization.

2157092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2157092 is about 1468.7041907750. The cubic root of 2157092 is about 129.2080452006.

The spelling of 2157092 in words is "two million, one hundred fifty-seven thousand, ninety-two".