11389195428 has 48 divisors (see below), whose sum is σ = 28695877056. Its totient is φ = 3494954880.

The previous prime is 11389195423. The next prime is 11389195451. The reversal of 11389195428 is 82459198311.

It is a super-2 number, since 2×11389195428² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11389195423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39678 + ... + 156053.

It is an arithmetic number, because the mean of its divisors is an integer number (597830772).

Almost surely, 2^11389195428 is an apocalyptic number.

It is an amenable number.

11389195428 is an abundant number, since it is smaller than the sum of its proper divisors (17306681628).

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

11389195428 is a wasteful number, since it uses less digits than its factorization.

11389195428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196124 (or 196122 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The spelling of 11389195428 in words is "eleven billion, three hundred eighty-nine million, one hundred ninety-five thousand, four hundred twenty-eight".