992153880 has 128 divisors (see below), whose sum is σ = 3315686400. Its totient is φ = 263894400.

The previous prime is 992153873. The next prime is 992153909. The reversal of 992153880 is 88351299.

It is a happy number.

992153880 is a `hidden beast` number, since 99 + 21 + 538 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529345 + ... + 531215.

It is an arithmetic number, because the mean of its divisors is an integer number (25903800).

Almost surely, 2^992153880 is an apocalyptic number.

992153880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 992153880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657843200).

992153880 is an abundant number, since it is smaller than the sum of its proper divisors (2323532520).

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

992153880 is a wasteful number, since it uses less digits than its factorization.

992153880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 992153880 is about 31498.4742487632. The cubic root of 992153880 is about 997.3777565161.

The spelling of 992153880 in words is "nine hundred ninety-two million, one hundred fifty-three thousand, eight hundred eighty".