39280642 has 16 divisors (see below), whose sum is σ = 65100672. Its totient is φ = 17680960.

The previous prime is 39280639. The next prime is 39280649. The reversal of 39280642 is 24608293.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 39280598 and 39280607.

It is not an unprimeable number, because it can be changed into a prime (39280649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24334 + ... + 25897.

It is an arithmetic number, because the mean of its divisors is an integer number (4068792).

Almost surely, 2^39280642 is an apocalyptic number.

39280642 is a deficient number, since it is larger than the sum of its proper divisors (25820030).

39280642 is a wasteful number, since it uses less digits than its factorization.

39280642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50273.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 39280642 is about 6267.4270637958. The cubic root of 39280642 is about 339.9326337120.

The spelling of 39280642 in words is "thirty-nine million, two hundred eighty thousand, six hundred forty-two".