1220400514 has 16 divisors (see below), whose sum is σ = 1932220800. Its totient is φ = 576502704.

The previous prime is 1220400499. The next prime is 1220400551. The reversal of 1220400514 is 4150040221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1220400491 and 1220400500.

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, 29809 + ... + 57700.

It is an arithmetic number, because the mean of its divisors is an integer number (120763800).

Almost surely, 2^1220400514 is an apocalyptic number.

1220400514 is a deficient number, since it is larger than the sum of its proper divisors (711820286).

1220400514 is a wasteful number, since it uses less digits than its factorization.

1220400514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87897.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1220400514 is about 34934.2312639050. The cubic root of 1220400514 is about 1068.6466466224.

Adding to 1220400514 its reverse (4150040221), we get a palindrome (5370440735).

The spelling of 1220400514 in words is "one billion, two hundred twenty million, four hundred thousand, five hundred fourteen".