16040420 has 24 divisors (see below), whose sum is σ = 36747648. Its totient is φ = 5832800.

The previous prime is 16040411. The next prime is 16040441. The reversal of 16040420 is 2404061.

16040420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36236 + ... + 36675.

It is an arithmetic number, because the mean of its divisors is an integer number (1531152).

Almost surely, 2^16040420 is an apocalyptic number.

16040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16040420 is an abundant number, since it is smaller than the sum of its proper divisors (20707228).

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

16040420 is a wasteful number, since it uses less digits than its factorization.

16040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72931 (or 72929 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 16040420 is about 4005.0493130547. The cubic root of 16040420 is about 252.1962232497.

Adding to 16040420 its reverse (2404061), we get a palindrome (18444481).

The spelling of 16040420 in words is "sixteen million, forty thousand, four hundred twenty".