1015423720 has 32 divisors (see below), whose sum is σ = 2333318400. Its totient is φ = 397526848.

The previous prime is 1015423709. The next prime is 1015423723. The reversal of 1015423720 is 273245101.

It is a happy number.

It is a super-2 number, since 2×1015423720² = 2062170662277276800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1015423723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268180 + ... + 271939.

It is an arithmetic number, because the mean of its divisors is an integer number (72916200).

Almost surely, 2^1015423720 is an apocalyptic number.

1015423720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015423720 is an abundant number, since it is smaller than the sum of its proper divisors (1317894680).

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

1015423720 is a wasteful number, since it uses less digits than its factorization.

1015423720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540177 (or 540173 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1015423720 is about 31865.7138630221. The cubic root of 1015423720 is about 1005.1150318401.

Adding to 1015423720 its reverse (273245101), we get a palindrome (1288668821).

The spelling of 1015423720 in words is "one billion, fifteen million, four hundred twenty-three thousand, seven hundred twenty".