1212860028 has 24 divisors (see below), whose sum is σ = 2842371280. Its totient is φ = 402520320.

The previous prime is 1212860023. The next prime is 1212860029. The reversal of 1212860028 is 8200682121.

It is a junction number, because it is equal to n+sod(n) for n = 1212859977 and 1212860004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212860023) 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, 217933 + ... + 223428.

Almost surely, 2^1212860028 is an apocalyptic number.

It is an amenable number.

1212860028 is an abundant number, since it is smaller than the sum of its proper divisors (1629511252).

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

1212860028 is a wasteful number, since it uses less digits than its factorization.

1212860028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441597 (or 441595 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1212860028 is about 34826.1400100557. The cubic root of 1212860028 is about 1066.4411497633.

The spelling of 1212860028 in words is "one billion, two hundred twelve million, eight hundred sixty thousand, twenty-eight".