1224162840 has 64 divisors (see below), whose sum is σ = 3675016800. Its totient is φ = 326218752.

The previous prime is 1224162827. The next prime is 1224162859. The reversal of 1224162840 is 482614221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1224162798 and 1224162807.

It is a congruent number.

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, 243876 + ... + 248844.

Almost surely, 2^1224162840 is an apocalyptic number.

1224162840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224162840 is an abundant number, since it is smaller than the sum of its proper divisors (2450853960).

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

1224162840 is a wasteful number, since it uses less digits than its factorization.

1224162840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7036 (or 7032 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1224162840 is about 34988.0385274739. The cubic root of 1224162840 is about 1069.7436833277.

The spelling of 1224162840 in words is "one billion, two hundred twenty-four million, one hundred sixty-two thousand, eight hundred forty".