1220672160 has 96 divisors (see below), whose sum is σ = 4272367680. Its totient is φ = 325511424.

The previous prime is 1220672099. The next prime is 1220672161. The reversal of 1220672160 is 612760221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1220672161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136962 + ... + 145601.

It is an arithmetic number, because the mean of its divisors is an integer number (44503830).

Almost surely, 2^1220672160 is an apocalyptic number.

1220672160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220672160 is an abundant number, since it is smaller than the sum of its proper divisors (3051695520).

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

1220672160 is a wasteful number, since it uses less digits than its factorization.

1220672160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282587 (or 282573 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1220672160 is about 34938.1190106165. The cubic root of 1220672160 is about 1068.7259298980.

It can be divided in two parts, 1220 and 672160, that added together give a triangular number (673380 = T₁₁₆₀).

The spelling of 1220672160 in words is "one billion, two hundred twenty million, six hundred seventy-two thousand, one hundred sixty".