1023257436 has 48 divisors (see below), whose sum is σ = 2414219808. Its totient is φ = 337305600.

The previous prime is 1023257383. The next prime is 1023257437. The reversal of 1023257436 is 6347523201.

It is a junction number, because it is equal to n+sod(n) for n = 1023257397 and 1023257406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023257437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417976 + ... + 420416.

It is an arithmetic number, because the mean of its divisors is an integer number (50296246).

Almost surely, 2^1023257436 is an apocalyptic number.

It is an amenable number.

1023257436 is an abundant number, since it is smaller than the sum of its proper divisors (1390962372).

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

1023257436 is a wasteful number, since it uses less digits than its factorization.

1023257436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 2820 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 1023257436 is about 31988.3953333080. The cubic root of 1023257436 is about 1007.6931424544.

The spelling of 1023257436 in words is "one billion, twenty-three million, two hundred fifty-seven thousand, four hundred thirty-six".