102007840 has 96 divisors (see below), whose sum is σ = 265628160. Its totient is φ = 37016320.

The previous prime is 102007823. The next prime is 102007849. The reversal of 102007840 is 48700201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (102007849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212721 + ... + 213199.

It is an arithmetic number, because the mean of its divisors is an integer number (2766960).

Almost surely, 2^102007840 is an apocalyptic number.

102007840 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 102007840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132814080).

102007840 is an abundant number, since it is smaller than the sum of its proper divisors (163620320).

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

102007840 is an equidigital number, since it uses as much as digits as its factorization.

102007840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 102007840 is about 10099.8930687409. The cubic root of 102007840 is about 467.2448434626.

The spelling of 102007840 in words is "one hundred two million, seven thousand, eight hundred forty".