26628928940 has 12 divisors (see below), whose sum is σ = 55920750816. Its totient is φ = 10651571568.

The previous prime is 26628928933. The next prime is 26628928957. The reversal of 26628928940 is 4982982662.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665723204 + ... + 665723243.

It is an arithmetic number, because the mean of its divisors is an integer number (4660062568).

Almost surely, 2^26628928940 is an apocalyptic number.

26628928940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26628928940 is an abundant number, since it is smaller than the sum of its proper divisors (29291821876).

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

26628928940 is a wasteful number, since it uses less digits than its factorization.

26628928940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331446456 (or 1331446454 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 26628928940 in words is "twenty-six billion, six hundred twenty-eight million, nine hundred twenty-eight thousand, nine hundred forty".