14971428 has 18 divisors (see below), whose sum is σ = 37844534. Its totient is φ = 4990464.

The previous prime is 14971423. The next prime is 14971433. The reversal of 14971428 is 82417941.

It is an interprime number because it is at equal distance from previous prime (14971423) and next prime (14971433).

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 2985984 = 3462^2 + 1728^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 415873 = 14971428 / (1 + 4 + 9 + 7 + 1 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 14971392 and 14971401.

It is not an unprimeable number, because it can be changed into a prime (14971423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207901 + ... + 207972.

Almost surely, 2^14971428 is an apocalyptic number.

14971428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

14971428 is an abundant number, since it is smaller than the sum of its proper divisors (22873106).

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

14971428 is a wasteful number, since it uses less digits than its factorization.

14971428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415883 (or 415878 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 14971428 is about 3869.2929586683. The cubic root of 14971428 is about 246.4645198794.

The spelling of 14971428 in words is "fourteen million, nine hundred seventy-one thousand, four hundred twenty-eight".