1403216 has 10 divisors (see below), whose sum is σ = 2718762. Its totient is φ = 701600.

The previous prime is 1403189. The next prime is 1403239. The reversal of 1403216 is 6123041.

1403216 = T₂₈₀ + T₂₈₁ + ... + T₃₁₁.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 10816 = 1180^2 + 104^2 .

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 1403194 and 1403203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43835 + ... + 43866.

2^1403216 is an apocalyptic number.

1403216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1403216 is a deficient number, since it is larger than the sum of its proper divisors (1315546).

1403216 is an equidigital number, since it uses as much as digits as its factorization.

1403216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87709 (or 87703 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1403216 is about 1184.5741850978. The cubic root of 1403216 is about 111.9544883114.

Adding to 1403216 its reverse (6123041), we get a palindrome (7526257).

The spelling of 1403216 in words is "one million, four hundred three thousand, two hundred sixteen".