1002023532 has 18 divisors (see below), whose sum is σ = 2532892908. Its totient is φ = 334007832.

The previous prime is 1002023531. The next prime is 1002023549. The reversal of 1002023532 is 2353202001.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1002023531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13916958 + ... + 13917029.

Almost surely, 2^1002023532 is an apocalyptic number.

1002023532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002023532 is an abundant number, since it is smaller than the sum of its proper divisors (1530869376).

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

1002023532 is a wasteful number, since it uses less digits than its factorization.

1002023532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27833997 (or 27833992 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1002023532 is about 31654.7552825796. The cubic root of 1002023532 is about 1000.6740562128.

Adding to 1002023532 its reverse (2353202001), we get a palindrome (3355225533).

The spelling of 1002023532 in words is "one billion, two million, twenty-three thousand, five hundred thirty-two".