1220732474 has 8 divisors (see below), whose sum is σ = 1971952500. Its totient is φ = 563414976.

The previous prime is 1220732473. The next prime is 1220732497. The reversal of 1220732474 is 4742370221.

It can be written as a sum of positive squares in 2 ways, for example, as 1197644449 + 23088025 = 34607^2 + 4805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1220732474.

It is not an unprimeable number, because it can be changed into a prime (1220732473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23475599 + ... + 23475650.

Almost surely, 2^1220732474 is an apocalyptic number.

1220732474 is a deficient number, since it is larger than the sum of its proper divisors (751220026).

1220732474 is a wasteful number, since it uses less digits than its factorization.

1220732474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46951264.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 1220732474 is about 34938.9821546078. The cubic root of 1220732474 is about 1068.7435316960.

The spelling of 1220732474 in words is "one billion, two hundred twenty million, seven hundred thirty-two thousand, four hundred seventy-four".