82451910 has 64 divisors (see below), whose sum is σ = 206841600. Its totient is φ = 21013632.

The previous prime is 82451903. The next prime is 82451933. The reversal of 82451910 is 1915428.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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, 64861 + ... + 66119.

It is an arithmetic number, because the mean of its divisors is an integer number (3231900).

Almost surely, 2^82451910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82451910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103420800).

82451910 is an abundant number, since it is smaller than the sum of its proper divisors (124389690).

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

82451910 is a wasteful number, since it uses less digits than its factorization.

82451910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 82451910 is about 9080.3034090277. The cubic root of 82451910 is about 435.2447822995.

The spelling of 82451910 in words is "eighty-two million, four hundred fifty-one thousand, nine hundred ten".