1240323928 has 8 divisors (see below), whose sum is σ = 2325607380. Its totient is φ = 620161960.

The previous prime is 1240323907. The next prime is 1240323941. The reversal of 1240323928 is 8293230421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1240323893 and 1240323902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77520238 + ... + 77520253.

Almost surely, 2^1240323928 is an apocalyptic number.

It is an amenable number.

1240323928 is a deficient number, since it is larger than the sum of its proper divisors (1085283452).

1240323928 is a wasteful number, since it uses less digits than its factorization.

1240323928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155040497 (or 155040493 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1240323928 is about 35218.2328915010. The cubic root of 1240323928 is about 1074.4306133437.

The spelling of 1240323928 in words is "one billion, two hundred forty million, three hundred twenty-three thousand, nine hundred twenty-eight".