1220773170 has 32 divisors (see below), whose sum is σ = 2934232128. Its totient is φ = 325053248.

The previous prime is 1220773157. The next prime is 1220773223. The reversal of 1220773170 is 713770221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9744 + ... + 50363.

It is an arithmetic number, because the mean of its divisors is an integer number (91694754).

Almost surely, 2^1220773170 is an apocalyptic number.

1220773170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220773170 is an abundant number, since it is smaller than the sum of its proper divisors (1713458958).

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

1220773170 is a wasteful number, since it uses less digits than its factorization.

1220773170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60794.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 1220773170 is about 34939.5645364964. The cubic root of 1220773170 is about 1068.7554079272.

It can be divided in two parts, 1220 and 773170, that added together give a triangular number (774390 = T₁₂₄₄).

The spelling of 1220773170 in words is "one billion, two hundred twenty million, seven hundred seventy-three thousand, one hundred seventy".