1024073721 has 24 divisors (see below), whose sum is σ = 1615030560. Its totient is φ = 620136000.

The previous prime is 1024073669. The next prime is 1024073759. The reversal of 1024073721 is 1273704201.

It is a happy number.

It is not a de Polignac number, because 1024073721 - 2¹⁴ = 1024057337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1024073221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140085 + ... + 147213.

It is an arithmetic number, because the mean of its divisors is an integer number (67292940).

Almost surely, 2^1024073721 is an apocalyptic number.

1024073721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1024073721 is a deficient number, since it is larger than the sum of its proper divisors (590956839).

1024073721 is a wasteful number, since it uses less digits than its factorization.

1024073721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8597 (or 8594 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1024073721 is about 32001.1518698937. The cubic root of 1024073721 is about 1007.9610275229.

Adding to 1024073721 its reverse (1273704201), we get a palindrome (2297777922).

The spelling of 1024073721 in words is "one billion, twenty-four million, seventy-three thousand, seven hundred twenty-one".