102620544 has 128 divisors (see below), whose sum is σ = 299251680. Its totient is φ = 30965760.

The previous prime is 102620543. The next prime is 102620563. The reversal of 102620544 is 445026201.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102620543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304344 + ... + 304680.

Almost surely, 2^102620544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102620544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149625840).

102620544 is an abundant number, since it is smaller than the sum of its proper divisors (196631136).

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

102620544 is a wasteful number, since it uses less digits than its factorization.

102620544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 102620544 is about 10130.1798601999. The cubic root of 102620544 is about 468.1784694448.

Adding to 102620544 its reverse (445026201), we get a palindrome (547646745).

The spelling of 102620544 in words is "one hundred two million, six hundred twenty thousand, five hundred forty-four".