981824436 has 48 divisors (see below), whose sum is σ = 2627591680. Its totient is φ = 316716480.

The previous prime is 981824429. The next prime is 981824479. The reversal of 981824436 is 634428189.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 981824391 and 981824400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143281 + ... + 149976.

Almost surely, 2^981824436 is an apocalyptic number.

It is an amenable number.

981824436 is an abundant number, since it is smaller than the sum of its proper divisors (1645767244).

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

981824436 is a wasteful number, since it uses less digits than its factorization.

981824436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293301 (or 293293 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 981824436 is about 31334.0778705868. The cubic root of 981824436 is about 993.9043977973.

The spelling of 981824436 in words is "nine hundred eighty-one million, eight hundred twenty-four thousand, four hundred thirty-six".