28940336143992 has 144 divisors (see below), whose sum is σ = 96997830218640. Its totient is φ = 7632616103424.

The previous prime is 28940336143973. The next prime is 28940336143993. The reversal of 28940336143992 is 29934163304982.

28940336143992 is a `hidden beast` number, since 2 + 8 + 9 + 4 + 0 + 3 + 3 + 614 + 3 + 9 + 9 + 2 = 666.

It is a super-2 number, since 2×28940336143992² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28940336143993) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 169800333 + ... + 169970684.

It is an arithmetic number, because the mean of its divisors is an integer number (673596043185).

Almost surely, 2^{28940336143992} is an apocalyptic number.

It is an amenable number.

28940336143992 is an abundant number, since it is smaller than the sum of its proper divisors (68057494074648).

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

28940336143992 is a wasteful number, since it uses less digits than its factorization.

28940336143992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339771062 (or 339771042 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 63.

The spelling of 28940336143992 in words is "twenty-eight trillion, nine hundred forty billion, three hundred thirty-six million, one hundred forty-three thousand, nine hundred ninety-two".