28947949404 has 48 divisors (see below), whose sum is σ = 73707755520. Its totient is φ = 8769479040.

The previous prime is 28947949397. The next prime is 28947949411. The reversal of 28947949404 is 40494974982.

It is an interprime number because it is at equal distance from previous prime (28947949397) and next prime (28947949411).

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, 434757 + ... + 496899.

It is an arithmetic number, because the mean of its divisors is an integer number (1535578240).

Almost surely, 2^28947949404 is an apocalyptic number.

It is an amenable number.

28947949404 is an abundant number, since it is smaller than the sum of its proper divisors (44759806116).

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

28947949404 is a wasteful number, since it uses less digits than its factorization.

28947949404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65690 (or 65688 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 28947949404 in words is "twenty-eight billion, nine hundred forty-seven million, nine hundred forty-nine thousand, four hundred four".