16040430 has 192 divisors, whose sum is σ = 52835328. Its totient is φ = 3421440.

The previous prime is 16040411. The next prime is 16040441. The reversal of 16040430 is 3404061.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 391210 + ... + 391250.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

Almost surely, 2^16040430 is an apocalyptic number.

16040430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16040430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26417664).

16040430 is an abundant number, since it is smaller than the sum of its proper divisors (36794898).

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

16040430 is a wasteful number, since it uses less digits than its factorization.

16040430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 16040430 is about 4005.0505614786. The cubic root of 16040430 is about 252.1962756582.

Adding to 16040430 its reverse (3404061), we get a palindrome (19444491).

The spelling of 16040430 in words is "sixteen million, forty thousand, four hundred thirty".