1012012656 has 40 divisors (see below), whose sum is σ = 2751966720. Its totient is φ = 319582656.

The previous prime is 1012012643. The next prime is 1012012667. The reversal of 1012012656 is 6562102101.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 553920 + ... + 555743.

It is an arithmetic number, because the mean of its divisors is an integer number (68799168).

Almost surely, 2^1012012656 is an apocalyptic number.

1012012656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1012012656 is an abundant number, since it is smaller than the sum of its proper divisors (1739954064).

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

1012012656 is a wasteful number, since it uses less digits than its factorization.

1012012656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109693 (or 1109687 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1012012656 is about 31812.1463595275. The cubic root of 1012012656 is about 1003.9882910546.

Adding to 1012012656 its reverse (6562102101), we get a palindrome (7574114757).

The spelling of 1012012656 in words is "one billion, twelve million, twelve thousand, six hundred fifty-six".