1382523220 has 48 divisors (see below), whose sum is σ = 3291200640. Its totient is φ = 483601536.

The previous prime is 1382523211. The next prime is 1382523221. The reversal of 1382523220 is 223252831.

It is a super-2 number, since 2×1382523220² = 3822740907678336800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1382523221) 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, 134992 + ... + 144871.

It is an arithmetic number, because the mean of its divisors is an integer number (68566680).

Almost surely, 2^1382523220 is an apocalyptic number.

1382523220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1382523220 is an abundant number, since it is smaller than the sum of its proper divisors (1908677420).

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

1382523220 is a wasteful number, since it uses less digits than its factorization.

1382523220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279904 (or 279902 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1382523220 is about 37182.2971318341. The cubic root of 1382523220 is about 1114.0144172652.

The spelling of 1382523220 in words is "one billion, three hundred eighty-two million, five hundred twenty-three thousand, two hundred twenty".