102450020 has 24 divisors (see below), whose sum is σ = 216094200. Its totient is φ = 40799232.

The previous prime is 102450017. The next prime is 102450031. The reversal of 102450020 is 20054201.

It can be written as a sum of positive squares in 4 ways, for example, as 29073664 + 73376356 = 5392^2 + 8566^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102449977 and 102450004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6605 + ... + 15764.

It is an arithmetic number, because the mean of its divisors is an integer number (9003925).

Almost surely, 2^102450020 is an apocalyptic number.

102450020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102450020 is an abundant number, since it is smaller than the sum of its proper divisors (113644180).

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

102450020 is a wasteful number, since it uses less digits than its factorization.

102450020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22607 (or 22605 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 102450020 is about 10121.7597284267. The cubic root of 102450020 is about 467.9190024677.

The spelling of 102450020 in words is "one hundred two million, four hundred fifty thousand, twenty".