102220540 has 24 divisors (see below), whose sum is σ = 216880272. Its totient is φ = 40465920.

The previous prime is 102220523. The next prime is 102220543. The reversal of 102220540 is 45022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220543) 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, 24406 + ... + 28285.

It is an arithmetic number, because the mean of its divisors is an integer number (9036678).

Almost surely, 2^102220540 is an apocalyptic number.

102220540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102220540 is an abundant number, since it is smaller than the sum of its proper divisors (114659732).

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

102220540 is a wasteful number, since it uses less digits than its factorization.

102220540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52797 (or 52795 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 102220540 is about 10110.4173998901. The cubic root of 102220540 is about 467.5693740166.

Adding to 102220540 its reverse (45022201), we get a palindrome (147242741).

The spelling of 102220540 in words is "one hundred two million, two hundred twenty thousand, five hundred forty".