1012796440 has 32 divisors (see below), whose sum is σ = 2285172000. Its totient is φ = 403984384.

The previous prime is 1012796423. The next prime is 1012796479. The reversal of 1012796440 is 446972101.

It is a junction number, because it is equal to n+sod(n) for n = 1012796396 and 1012796405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20905 + ... + 49624.

It is an arithmetic number, because the mean of its divisors is an integer number (71411625).

Almost surely, 2^1012796440 is an apocalyptic number.

1012796440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012796440 is an abundant number, since it is smaller than the sum of its proper divisors (1272375560).

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

1012796440 is a wasteful number, since it uses less digits than its factorization.

1012796440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70899 (or 70895 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1012796440 is about 31824.4629176990. The cubic root of 1012796440 is about 1004.2474139330.

The spelling of 1012796440 in words is "one billion, twelve million, seven hundred ninety-six thousand, four hundred forty".