19680450 has 24 divisors (see below), whose sum is σ = 48807888. Its totient is φ = 5248080.

The previous prime is 19680439. The next prime is 19680467. The reversal of 19680450 is 5408691.

It is a super-2 number, since 2×19680450² = 774640224405000, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65452 + ... + 65751.

It is an arithmetic number, because the mean of its divisors is an integer number (2033662).

Almost surely, 2^19680450 is an apocalyptic number.

19680450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19680450 is an abundant number, since it is smaller than the sum of its proper divisors (29127438).

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

19680450 is a wasteful number, since it uses less digits than its factorization.

19680450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131218 (or 131213 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 19680450 is about 4436.2653211908. The cubic root of 19680450 is about 269.9883396885.

The spelling of 19680450 in words is "nineteen million, six hundred eighty thousand, four hundred fifty".