998773280 has 48 divisors (see below), whose sum is σ = 2363074560. Its totient is φ = 398921472.

The previous prime is 998773277. The next prime is 998773289. The reversal of 998773280 is 82377899.

It is not an unprimeable number, because it can be changed into a prime (998773289) 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, 114017 + ... + 122463.

It is an arithmetic number, because the mean of its divisors is an integer number (49230720).

Almost surely, 2^998773280 is an apocalyptic number.

It is an amenable number.

998773280 is an abundant number, since it is smaller than the sum of its proper divisors (1364301280).

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

998773280 is a wasteful number, since it uses less digits than its factorization.

998773280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201 (or 9193 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 998773280 is about 31603.3745033659. The cubic root of 998773280 is about 999.5909260146.

The spelling of 998773280 in words is "nine hundred ninety-eight million, seven hundred seventy-three thousand, two hundred eighty".