16072020 has 72 divisors (see below), whose sum is σ = 50572704. Its totient is φ = 4284576.

The previous prime is 16072019. The next prime is 16072039. The reversal of 16072020 is 2027061.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 16071984 and 16072002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3207 + ... + 6513.

Almost surely, 2^16072020 is an apocalyptic number.

16072020 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 16072020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25286352).

16072020 is an abundant number, since it is smaller than the sum of its proper divisors (34500684).

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

16072020 is a wasteful number, since it uses less digits than its factorization.

16072020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331 (or 3317 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 16072020 is about 4008.9923921105. The cubic root of 16072020 is about 252.3617254222.

Adding to 16072020 its reverse (2027061), we get a palindrome (18099081).

The spelling of 16072020 in words is "sixteen million, seventy-two thousand, twenty".