28634420700402 has 48 divisors (see below), whose sum is σ = 62950443506496. Its totient is φ = 8676814933600.

The previous prime is 28634420700377. The next prime is 28634420700407. The reversal of 28634420700402 is 20400702443682.

It is a super-2 number, since 2×28634420700402² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28634420700407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22255627 + ... + 23507057.

It is an arithmetic number, because the mean of its divisors is an integer number (1311467573052).

Almost surely, 2^{28634420700402} is an apocalyptic number.

28634420700402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28634420700402 is an abundant number, since it is smaller than the sum of its proper divisors (34316022806094).

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

28634420700402 is a wasteful number, since it uses less digits than its factorization.

28634420700402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282975 (or 1282964 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 42.

The spelling of 28634420700402 in words is "twenty-eight trillion, six hundred thirty-four billion, four hundred twenty million, seven hundred thousand, four hundred two".