28407351890 has 32 divisors (see below), whose sum is σ = 53276050944. Its totient is φ = 10893611520.

The previous prime is 28407351887. The next prime is 28407351893. The reversal of 28407351890 is 9815370482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28407351887) and next prime (28407351893).

It is not an unprimeable number, because it can be changed into a prime (28407351893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395039 + ... + 461378.

It is an arithmetic number, because the mean of its divisors is an integer number (1664876592).

Almost surely, 2^28407351890 is an apocalyptic number.

28407351890 is a deficient number, since it is larger than the sum of its proper divisors (24868699054).

28407351890 is a wasteful number, since it uses less digits than its factorization.

28407351890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856562.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 28407351890 in words is "twenty-eight billion, four hundred seven million, three hundred fifty-one thousand, eight hundred ninety".