16625780 has 48 divisors (see below), whose sum is σ = 37255680. Its totient is φ = 6217728.

The previous prime is 16625773. The next prime is 16625783. The reversal of 16625780 is 8752661.

It is a self number, because there is not a number n which added to its sum of digits gives 16625780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16625783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21236 + ... + 22004.

It is an arithmetic number, because the mean of its divisors is an integer number (776160).

Almost surely, 2^16625780 is an apocalyptic number.

16625780 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 16625780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18627840).

16625780 is an abundant number, since it is smaller than the sum of its proper divisors (20629900).

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

16625780 is a wasteful number, since it uses less digits than its factorization.

16625780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 16625780 is about 4077.4722561901. The cubic root of 16625780 is about 255.2274275019.

The spelling of 16625780 in words is "sixteen million, six hundred twenty-five thousand, seven hundred eighty".