1212786830 has 32 divisors (see below), whose sum is σ = 2202522624. Its totient is φ = 480797856.

The previous prime is 1212786823. The next prime is 1212786833. The reversal of 1212786830 is 386872121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212786833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753887 + ... + 755493.

It is an arithmetic number, because the mean of its divisors is an integer number (68828832).

Almost surely, 2^1212786830 is an apocalyptic number.

1212786830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212786830 is a deficient number, since it is larger than the sum of its proper divisors (989735794).

1212786830 is a wasteful number, since it uses less digits than its factorization.

1212786830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1212786830 is about 34825.0890881847. The cubic root of 1212786830 is about 1066.4196955345.

The spelling of 1212786830 in words is "one billion, two hundred twelve million, seven hundred eighty-six thousand, eight hundred thirty".