16383780 has 72 divisors (see below), whose sum is σ = 56801472. Its totient is φ = 3744576.

The previous prime is 16383749. The next prime is 16383781. The reversal of 16383780 is 8738361.

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

It is not an unprimeable number, because it can be changed into a prime (16383781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5242 + ... + 7761.

Almost surely, 2^16383780 is an apocalyptic number.

16383780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16383780 is an abundant number, since it is smaller than the sum of its proper divisors (40417692).

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

16383780 is a wasteful number, since it uses less digits than its factorization.

16383780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13025 (or 13020 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 16383780 is about 4047.6882291007. The cubic root of 16383780 is about 253.9830314992.

The spelling of 16383780 in words is "sixteen million, three hundred eighty-three thousand, seven hundred eighty".