1262408220 has 48 divisors (see below), whose sum is σ = 3927493920. Its totient is φ = 336642048.

The previous prime is 1262408209. The next prime is 1262408221. The reversal of 1262408220 is 228042621.

It is a happy number.

1262408220 is a `hidden beast` number, since 12 + 624 + 0 + 8 + 2 + 20 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262408221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1168357 + ... + 1169436.

It is an arithmetic number, because the mean of its divisors is an integer number (81822790).

Almost surely, 2^1262408220 is an apocalyptic number.

1262408220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1262408220 is an abundant number, since it is smaller than the sum of its proper divisors (2665085700).

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

1262408220 is a wasteful number, since it uses less digits than its factorization.

1262408220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337811 (or 2337803 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 1262408220 is about 35530.3844617533. The cubic root of 1262408220 is about 1080.7699756142.

The spelling of 1262408220 in words is "one billion, two hundred sixty-two million, four hundred eight thousand, two hundred twenty".