28741438 has 8 divisors (see below), whose sum is σ = 47031480. Its totient is φ = 13064280.

The previous prime is 28741417. The next prime is 28741481. The reversal of 28741438 is 83414782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28741397 and 28741406.

It is a congruent number.

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, 653193 + ... + 653236.

It is an arithmetic number, because the mean of its divisors is an integer number (5878935).

Almost surely, 2^28741438 is an apocalyptic number.

28741438 is a deficient number, since it is larger than the sum of its proper divisors (18290042).

28741438 is a wasteful number, since it uses less digits than its factorization.

28741438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306442.

The product of its digits is 43008, while the sum is 37.

The square root of 28741438 is about 5361.1041773127. The cubic root of 28741438 is about 306.3158698797.

The spelling of 28741438 in words is "twenty-eight million, seven hundred forty-one thousand, four hundred thirty-eight".