1097892 has 18 divisors (see below), whose sum is σ = 2775318. Its totient is φ = 365952.

The previous prime is 1097891. The next prime is 1097893. The reversal of 1097892 is 2987901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1097891) and next prime (1097893).

It can be written as a sum of positive squares in only one way, i.e., 1028196 + 69696 = 1014^2 + 264^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 30497 = 1097892 / (1 + 0 + 9 + 7 + 8 + 9 + 2).

It is not an unprimeable number, because it can be changed into a prime (1097891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15213 + ... + 15284.

2^1097892 is an apocalyptic number.

1097892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1097892 is an abundant number, since it is smaller than the sum of its proper divisors (1677426).

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

1097892 is a wasteful number, since it uses less digits than its factorization.

1097892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30507 (or 30502 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1097892 is about 1047.8034166770. The cubic root of 1097892 is about 103.1620285760.

It can be divided in two parts, 109 and 7892, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 1097892 in words is "one million, ninety-seven thousand, eight hundred ninety-two".