28829405 has 8 divisors (see below), whose sum is σ = 37740384. Its totient is φ = 20966800.

The previous prime is 28829357. The next prime is 28829407. The reversal of 28829405 is 50492882.

28829405 = T₂₄₂ + T₂₄₃ + ... + T₅₇₁.

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

It is not a de Polignac number, because 28829405 - 2¹² = 28825309 is a prime.

It is a super-2 number, since 2×28829405² = 1662269185308050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28829407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262031 + ... + 262140.

It is an arithmetic number, because the mean of its divisors is an integer number (4717548).

Almost surely, 2^28829405 is an apocalyptic number.

It is an amenable number.

28829405 is a deficient number, since it is larger than the sum of its proper divisors (8910979).

28829405 is a wasteful number, since it uses less digits than its factorization.

28829405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524187.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 28829405 is about 5369.3020961760. The cubic root of 28829405 is about 306.6280584403.

The spelling of 28829405 in words is "twenty-eight million, eight hundred twenty-nine thousand, four hundred five".