1214563136 has 56 divisors (see below), whose sum is σ = 2525304576. Its totient is φ = 578856960.

The previous prime is 1214563127. The next prime is 1214563157. The reversal of 1214563136 is 6313654121.

It is a super-2 number, since 2×1214563136² = 2950327222660308992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128360 + ... + 137496.

Almost surely, 2^1214563136 is an apocalyptic number.

1214563136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1214563136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262652288).

1214563136 is an abundant number, since it is smaller than the sum of its proper divisors (1310741440).

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

1214563136 is an equidigital number, since it uses as much as digits as its factorization.

1214563136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9247 (or 9237 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 1214563136 is about 34850.5830080359. The cubic root of 1214563136 is about 1066.9400847700.

The spelling of 1214563136 in words is "one billion, two hundred fourteen million, five hundred sixty-three thousand, one hundred thirty-six".