28731333148782 has 32 divisors (see below), whose sum is σ = 62687255754240. Its totient is φ = 8706365881920.

The previous prime is 28731333148769. The next prime is 28731333148799. The reversal of 28731333148782 is 28784133313782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3506578 + ... + 8352170.

It is an arithmetic number, because the mean of its divisors is an integer number (1958976742320).

Almost surely, 2^{28731333148782} is an apocalyptic number.

28731333148782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28731333148782 is an abundant number, since it is smaller than the sum of its proper divisors (33955922605458).

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

28731333148782 is a wasteful number, since it uses less digits than its factorization.

28731333148782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935448.

The product of its digits is 32514048, while the sum is 60.

The spelling of 28731333148782 in words is "twenty-eight trillion, seven hundred thirty-one billion, three hundred thirty-three million, one hundred forty-eight thousand, seven hundred eighty-two".