102990534 has 16 divisors (see below), whose sum is σ = 206504688. Its totient is φ = 34242912.

The previous prime is 102990491. The next prime is 102990553. The reversal of 102990534 is 435099201.

It is a junction number, because it is equal to n+sod(n) for n = 102990495 and 102990504.

It is a congruent number.

It is an unprimeable number.

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, 19237 + ... + 24000.

It is an arithmetic number, because the mean of its divisors is an integer number (12906543).

Almost surely, 2^102990534 is an apocalyptic number.

102990534 is an abundant number, since it is smaller than the sum of its proper divisors (103514154).

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

102990534 is a wasteful number, since it uses less digits than its factorization.

102990534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43639.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 102990534 is about 10148.4251980295. The cubic root of 102990534 is about 468.7404543478.

The spelling of 102990534 in words is "one hundred two million, nine hundred ninety thousand, five hundred thirty-four".