998770038 has 32 divisors (see below), whose sum is σ = 2329497600. Its totient is φ = 285362280.

The previous prime is 998770033. The next prime is 998770051. The reversal of 998770038 is 830077899.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998770033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240598 + ... + 244713.

It is an arithmetic number, because the mean of its divisors is an integer number (72796800).

Almost surely, 2^998770038 is an apocalyptic number.

998770038 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

998770038 is an abundant number, since it is smaller than the sum of its proper divisors (1330727562).

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

998770038 is a wasteful number, since it uses less digits than its factorization.

998770038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485337 (or 485323 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 998770038 is about 31603.3232113333. The cubic root of 998770038 is about 999.5898444621.

The spelling of 998770038 in words is "nine hundred ninety-eight million, seven hundred seventy thousand, thirty-eight".