19954416 has 20 divisors (see below), whose sum is σ = 51549032. Its totient is φ = 6651456.

The previous prime is 19954393. The next prime is 19954439. The reversal of 19954416 is 61445991.

It is an interprime number because it is at equal distance from previous prime (19954393) and next prime (19954439).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207811 + ... + 207906.

Almost surely, 2^19954416 is an apocalyptic number.

19954416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19954416 is an abundant number, since it is smaller than the sum of its proper divisors (31594616).

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

19954416 is a wasteful number, since it uses less digits than its factorization.

19954416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415728 (or 415722 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 19954416 is about 4467.0366015962. The cubic root of 19954416 is about 271.2353814317.

It can be divided in two parts, 199 and 54416, that added together give a triangular number (54615 = T₃₃₀).

The spelling of 19954416 in words is "nineteen million, nine hundred fifty-four thousand, four hundred sixteen".