1214477928 has 32 divisors (see below), whose sum is σ = 3373550400. Its totient is φ = 404825904.

The previous prime is 1214477923. The next prime is 1214477959. The reversal of 1214477928 is 8297744121.

It is not an unprimeable number, because it can be changed into a prime (1214477923) 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, 2811076 + ... + 2811507.

It is an arithmetic number, because the mean of its divisors is an integer number (105423450).

Almost surely, 2^1214477928 is an apocalyptic number.

1214477928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1214477928 is an abundant number, since it is smaller than the sum of its proper divisors (2159072472).

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

1214477928 is a wasteful number, since it uses less digits than its factorization.

1214477928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622598 (or 5622588 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 1214477928 is about 34849.3605106320. The cubic root of 1214477928 is about 1066.9151336980.

The spelling of 1214477928 in words is "one billion, two hundred fourteen million, four hundred seventy-seven thousand, nine hundred twenty-eight".