16503948 has 36 divisors (see below), whose sum is σ = 41867280. Its totient is φ = 5481696.

The previous prime is 16503947. The next prime is 16503953. The reversal of 16503948 is 84930561.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16503941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12286 + ... + 13562.

It is an arithmetic number, because the mean of its divisors is an integer number (1162980).

Almost surely, 2^16503948 is an apocalyptic number.

16503948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16503948 is an abundant number, since it is smaller than the sum of its proper divisors (25363332).

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

16503948 is a wasteful number, since it uses less digits than its factorization.

16503948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646 (or 1641 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 16503948 is about 4062.5051384583. The cubic root of 16503948 is about 254.6024717203.

The spelling of 16503948 in words is "sixteen million, five hundred three thousand, nine hundred forty-eight".