102751220 has 96 divisors (see below), whose sum is σ = 260620416. Its totient is φ = 33523200.

The previous prime is 102751219. The next prime is 102751237. The reversal of 102751220 is 22157201.

It is a super-2 number, since 2×102751220² = 21115626422976800, which contains 22 as substring.

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 = 102751192 and 102751201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105335 + ... + 106305.

It is an arithmetic number, because the mean of its divisors is an integer number (2714796).

Almost surely, 2^102751220 is an apocalyptic number.

102751220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102751220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130310208).

102751220 is an abundant number, since it is smaller than the sum of its proper divisors (157869196).

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

102751220 is a wasteful number, since it uses less digits than its factorization.

102751220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 102751220 is about 10136.6276443401. The cubic root of 102751220 is about 468.3771097856.

The spelling of 102751220 in words is "one hundred two million, seven hundred fifty-one thousand, two hundred twenty".