28619351 has 4 divisors (see below), whose sum is σ = 28636104. Its totient is φ = 28602600.

The previous prime is 28619329. The next prime is 28619359. The reversal of 28619351 is 15391682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28619351 - 2¹⁴ = 28602967 is a prime.

It is a super-2 number, since 2×28619351² = 1638134503322402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28619359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5480 + ... + 9341.

It is an arithmetic number, because the mean of its divisors is an integer number (7159026).

Almost surely, 2^28619351 is an apocalyptic number.

28619351 is a deficient number, since it is larger than the sum of its proper divisors (16753).

28619351 is a wasteful number, since it uses less digits than its factorization.

28619351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16752.

The product of its digits is 12960, while the sum is 35.

The square root of 28619351 is about 5349.7056928396. The cubic root of 28619351 is about 305.8815345893.

The spelling of 28619351 in words is "twenty-eight million, six hundred nineteen thousand, three hundred fifty-one".