998406036 has 36 divisors (see below), whose sum is σ = 2525245632. Its totient is φ = 332604624.

The previous prime is 998406023. The next prime is 998406037. The reversal of 998406036 is 630604899.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×998406036² = 1993629225442466592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 998405982 and 998406000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998406037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61381 + ... + 75923.

It is an arithmetic number, because the mean of its divisors is an integer number (70145712).

Almost surely, 2^998406036 is an apocalyptic number.

It is an amenable number.

998406036 is an abundant number, since it is smaller than the sum of its proper divisors (1526839596).

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

998406036 is a wasteful number, since it uses less digits than its factorization.

998406036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16460 (or 16455 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 998406036 is about 31597.5637668476. The cubic root of 998406036 is about 999.4683961141.

The spelling of 998406036 in words is "nine hundred ninety-eight million, four hundred six thousand, thirty-six".