1220150736 has 320 divisors, whose sum is σ = 4268298240. Its totient is φ = 326177280.

The previous prime is 1220150699. The next prime is 1220150747. The reversal of 1220150736 is 6370510221.

It is a happy number.

1220150736 is a `hidden beast` number, since 122 + 0 + 1 + 507 + 36 = 666.

It is a super-2 number, since 2×1220150736² = 2977535637122683392, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3686091 + ... + 3686421.

It is an arithmetic number, because the mean of its divisors is an integer number (13338432).

Almost surely, 2^1220150736 is an apocalyptic number.

1220150736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220150736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134149120).

1220150736 is an abundant number, since it is smaller than the sum of its proper divisors (3048147504).

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

1220150736 is a wasteful number, since it uses less digits than its factorization.

1220150736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1220150736 is about 34930.6561060625. The cubic root of 1220150736 is about 1068.5737354124.

Adding to 1220150736 its reverse (6370510221), we get a palindrome (7590660957).

The spelling of 1220150736 in words is "one billion, two hundred twenty million, one hundred fifty thousand, seven hundred thirty-six".