102704490 has 128 divisors (see below), whose sum is σ = 319680000. Its totient is φ = 23454144.

The previous prime is 102704479. The next prime is 102704509. The reversal of 102704490 is 94407201.

It is a happy number.

102704490 is a `hidden beast` number, since 102 + 70 + 4 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92056 + ... + 93164.

It is an arithmetic number, because the mean of its divisors is an integer number (2497500).

Almost surely, 2^102704490 is an apocalyptic number.

102704490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102704490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159840000).

102704490 is an abundant number, since it is smaller than the sum of its proper divisors (216975510).

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

102704490 is a wasteful number, since it uses less digits than its factorization.

102704490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 102704490 is about 10134.3223749790. The cubic root of 102704490 is about 468.3060949558.

The spelling of 102704490 in words is "one hundred two million, seven hundred four thousand, four hundred ninety".