168423516 has 24 divisors (see below), whose sum is σ = 436653840. Its totient is φ = 56141136.

The previous prime is 168423487. The next prime is 168423523. The reversal of 168423516 is 615324861.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779631 + ... + 779846.

It is an arithmetic number, because the mean of its divisors is an integer number (18193910).

Almost surely, 2^168423516 is an apocalyptic number.

It is an amenable number.

168423516 is an abundant number, since it is smaller than the sum of its proper divisors (268230324).

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

168423516 is a wasteful number, since it uses less digits than its factorization.

168423516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559490 (or 1559482 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 168423516 is about 12977.8085977564. The cubic root of 168423516 is about 552.2481162468.

It can be divided in two parts, 1684 and 23516, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 168423516 in words is "one hundred sixty-eight million, four hundred twenty-three thousand, five hundred sixteen".