1023514220 has 24 divisors (see below), whose sum is σ = 2152366944. Its totient is φ = 408836736.

The previous prime is 1023514157. The next prime is 1023514229. The reversal of 1023514220 is 224153201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1023514192 and 1023514201.

It is not an unprimeable number, because it can be changed into a prime (1023514229) 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, 20657 + ... + 49736.

It is an arithmetic number, because the mean of its divisors is an integer number (89681956).

Almost surely, 2^1023514220 is an apocalyptic number.

1023514220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023514220 is an abundant number, since it is smaller than the sum of its proper divisors (1128852724).

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

1023514220 is a wasteful number, since it uses less digits than its factorization.

1023514220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71129 (or 71127 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1023514220 is about 31992.4087870857. The cubic root of 1023514220 is about 1007.7774281303. Note that the first 3 decimals are identical.

Adding to 1023514220 its reverse (224153201), we get a palindrome (1247667421).

The spelling of 1023514220 in words is "one billion, twenty-three million, five hundred fourteen thousand, two hundred twenty".