39428078900 has 72 divisors (see below), whose sum is σ = 102033052800. Its totient is φ = 12930445440.

The previous prime is 39428078891. The next prime is 39428078909. The reversal of 39428078900 is 987082493.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (39428078891) and next prime (39428078909).

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428078909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1208375 + ... + 1240574.

Almost surely, 2^39428078900 is an apocalyptic number.

It is an amenable number.

39428078900 is an abundant number, since it is smaller than the sum of its proper divisors (62604973900).

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

39428078900 is a wasteful number, since it uses less digits than its factorization.

39428078900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448993 (or 2448986 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 39428078900 in words is "thirty-nine billion, four hundred twenty-eight million, seventy-eight thousand, nine hundred".