28071001542 has 16 divisors (see below), whose sum is σ = 56408081472. Its totient is φ = 9312654120.

The previous prime is 28071001531. The next prime is 28071001547. The reversal of 28071001542 is 24510017082.

It is a super-2 number, since 2×28071001542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28071001547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11085228 + ... + 11087759.

It is an arithmetic number, because the mean of its divisors is an integer number (3525505092).

Almost surely, 2^28071001542 is an apocalyptic number.

28071001542 is an abundant number, since it is smaller than the sum of its proper divisors (28337079930).

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

28071001542 is a wasteful number, since it uses less digits than its factorization.

28071001542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22173203.

The product of its (nonzero) digits is 4480, while the sum is 30.

The spelling of 28071001542 in words is "twenty-eight billion, seventy-one million, one thousand, five hundred forty-two".