992645280 has 432 divisors, whose sum is σ = 3879544032. Its totient is φ = 239500800.

The previous prime is 992645279. The next prime is 992645309. The reversal of 992645280 is 82546299.

It is a tau number, because it is divible by the number of its divisors (432).

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4704375 + ... + 4704585.

It is an arithmetic number, because the mean of its divisors is an integer number (8980426).

Almost surely, 2^992645280 is an apocalyptic number.

992645280 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 992645280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939772016).

992645280 is an abundant number, since it is smaller than the sum of its proper divisors (2886898752).

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

992645280 is a wasteful number, since it uses less digits than its factorization.

992645280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 992645280 is about 31506.2736609711. The cubic root of 992645280 is about 997.5423917763.

The spelling of 992645280 in words is "nine hundred ninety-two million, six hundred forty-five thousand, two hundred eighty".