1220930436 has 96 divisors (see below), whose sum is σ = 3265920000. Its totient is φ = 351387520.

The previous prime is 1220930411. The next prime is 1220930467. The reversal of 1220930436 is 6340390221.

It is a super-2 number, since 2×1220930436² = 2981342259102300192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 451015 + ... + 453713.

It is an arithmetic number, because the mean of its divisors is an integer number (34020000).

Almost surely, 2^1220930436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220930436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632960000).

1220930436 is an abundant number, since it is smaller than the sum of its proper divisors (2044989564).

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

1220930436 is a wasteful number, since it uses less digits than its factorization.

1220930436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1220930436 is about 34941.8150072374. The cubic root of 1220930436 is about 1068.8013000648.

The spelling of 1220930436 in words is "one billion, two hundred twenty million, nine hundred thirty thousand, four hundred thirty-six".