16140297428 has 6 divisors (see below), whose sum is σ = 28245520506. Its totient is φ = 8070148712.

The previous prime is 16140297427. The next prime is 16140297463. The reversal of 16140297428 is 82479204161.

It can be written as a sum of positive squares in only one way, i.e., 15055780804 + 1084516624 = 122702^2 + 32932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16140297427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2017537175 + ... + 2017537182.

It is an arithmetic number, because the mean of its divisors is an integer number (4707586751).

Almost surely, 2^16140297428 is an apocalyptic number.

It is an amenable number.

16140297428 is a deficient number, since it is larger than the sum of its proper divisors (12105223078).

16140297428 is a wasteful number, since it uses less digits than its factorization.

16140297428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035074361 (or 4035074359 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 16140297428 in words is "sixteen billion, one hundred forty million, two hundred ninety-seven thousand, four hundred twenty-eight".