16503480 has 256 divisors, whose sum is σ = 65664000. Its totient is φ = 3608064.

The previous prime is 16503469. The next prime is 16503491. The reversal of 16503480 is 8430561.

16503480 is a `hidden beast` number, since 1 + 650 + 3 + 4 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (16503469) and next prime (16503491).

It is a super-2 number, since 2×16503480² = 544729704220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 279691 + ... + 279749.

It is an arithmetic number, because the mean of its divisors is an integer number (256500).

Almost surely, 2^16503480 is an apocalyptic number.

16503480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16503480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32832000).

16503480 is an abundant number, since it is smaller than the sum of its proper divisors (49160520).

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

16503480 is a wasteful number, since it uses less digits than its factorization.

16503480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16503480 is about 4062.4475381228. The cubic root of 16503480 is about 254.6000651228.

The spelling of 16503480 in words is "sixteen million, five hundred three thousand, four hundred eighty".