1020896440 has 32 divisors (see below), whose sum is σ = 2300562000. Its totient is φ = 407728384.

The previous prime is 1020896419. The next prime is 1020896449. The reversal of 1020896440 is 446980201.

It is a junction number, because it is equal to n+sod(n) for n = 1020896396 and 1020896405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020896449) 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, 6996 + ... + 45724.

Almost surely, 2^1020896440 is an apocalyptic number.

1020896440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020896440 is an abundant number, since it is smaller than the sum of its proper divisors (1279665560).

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

1020896440 is a wasteful number, since it uses less digits than its factorization.

1020896440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39399 (or 39395 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1020896440 is about 31951.4700757258. The cubic root of 1020896440 is about 1006.9175176110.

The spelling of 1020896440 in words is "one billion, twenty million, eight hundred ninety-six thousand, four hundred forty".