102090790 has 16 divisors (see below), whose sum is σ = 191753568. Its totient is φ = 39060736.

The previous prime is 102090787. The next prime is 102090799. The reversal of 102090790 is 97090201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102090799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221707 + ... + 222166.

It is an arithmetic number, because the mean of its divisors is an integer number (11984598).

Almost surely, 2^102090790 is an apocalyptic number.

102090790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102090790 is a deficient number, since it is larger than the sum of its proper divisors (89662778).

102090790 is a wasteful number, since it uses less digits than its factorization.

102090790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443903.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 102090790 is about 10103.9987133808. The cubic root of 102090790 is about 467.3714594131.

The spelling of 102090790 in words is "one hundred two million, ninety thousand, seven hundred ninety".