1020023544 has 32 divisors (see below), whose sum is σ = 2588123520. Its totient is φ = 334932576.

The previous prime is 1020023471. The next prime is 1020023549. The reversal of 1020023544 is 4453200201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020023544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020023549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315564 + ... + 318779.

It is an arithmetic number, because the mean of its divisors is an integer number (80878860).

Almost surely, 2^1020023544 is an apocalyptic number.

It is an amenable number.

1020023544 is an abundant number, since it is smaller than the sum of its proper divisors (1568099976).

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

1020023544 is a wasteful number, since it uses less digits than its factorization.

1020023544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634419 (or 634415 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1020023544 is about 31937.8074388334. The cubic root of 1020023544 is about 1006.6304545741.

Adding to 1020023544 its reverse (4453200201), we get a palindrome (5473223745).

The spelling of 1020023544 in words is "one billion, twenty million, twenty-three thousand, five hundred forty-four".