1230451620 has 48 divisors (see below), whose sum is σ = 3448605888. Its totient is φ = 327802240.

The previous prime is 1230451603. The next prime is 1230451637. The reversal of 1230451620 is 261540321.

It is an interprime number because it is at equal distance from previous prime (1230451603) and next prime (1230451637).

It is a super-2 number, since 2×1230451620² = 3028022378321248800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56062 + ... + 74858.

It is an arithmetic number, because the mean of its divisors is an integer number (71845956).

Almost surely, 2^1230451620 is an apocalyptic number.

1230451620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230451620 is an abundant number, since it is smaller than the sum of its proper divisors (2218154268).

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

1230451620 is a wasteful number, since it uses less digits than its factorization.

1230451620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19900 (or 19898 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1230451620 is about 35077.7938302853. The cubic root of 1230451620 is about 1071.5723876029.

Adding to 1230451620 its reverse (261540321), we get a palindrome (1491991941).

The spelling of 1230451620 in words is "one billion, two hundred thirty million, four hundred fifty-one thousand, six hundred twenty".