15400016 has 20 divisors (see below), whose sum is σ = 29899872. Its totient is φ = 7683936.

The previous prime is 15399997. The next prime is 15400031. The reversal of 15400016 is 61000451.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15399967 and 15400003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11981 + ... + 13203.

Almost surely, 2^15400016 is an apocalyptic number.

15400016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15400016 is a deficient number, since it is larger than the sum of its proper divisors (14499856).

15400016 is a wasteful number, since it uses less digits than its factorization.

15400016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 15400016 is about 3924.2854126580. The cubic root of 15400016 is about 248.7942796354.

Adding to 15400016 its reverse (61000451), we get a palindrome (76400467).

The spelling of 15400016 in words is "fifteen million, four hundred thousand, sixteen".