28431149641830 has 112 divisors (see below), whose sum is σ = 82631235188880. Its totient is φ = 6998436811584.

The previous prime is 28431149641801. The next prime is 28431149641859. The reversal of 28431149641830 is 3814694113482.

28431149641830 is a `hidden beast` number, since 2 + 8 + 4 + 31 + 1 + 496 + 41 + 83 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (28431149641801) and next prime (28431149641859).

It is a super-2 number, since 2×28431149641830² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 149906020 + ... + 150095559.

It is an arithmetic number, because the mean of its divisors is an integer number (737778885615).

Almost surely, 2^{28431149641830} is an apocalyptic number.

28431149641830 is an abundant number, since it is smaller than the sum of its proper divisors (54200085547050).

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

28431149641830 is a wasteful number, since it uses less digits than its factorization.

28431149641830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300001617 (or 300001602 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 28431149641830 in words is "twenty-eight trillion, four hundred thirty-one billion, one hundred forty-nine million, six hundred forty-one thousand, eight hundred thirty".