28993629 has 16 divisors (see below), whose sum is σ = 44788352. Its totient is φ = 16339968.

The previous prime is 28993621. The next prime is 28993637. The reversal of 28993629 is 92639982.

It is an interprime number because it is at equal distance from previous prime (28993621) and next prime (28993637).

It is not a de Polignac number, because 28993629 - 2³ = 28993621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28993621) 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, 7924 + ... + 10989.

It is an arithmetic number, because the mean of its divisors is an integer number (2799272).

Almost surely, 2^28993629 is an apocalyptic number.

It is an amenable number.

28993629 is a deficient number, since it is larger than the sum of its proper divisors (15794723).

28993629 is a wasteful number, since it uses less digits than its factorization.

28993629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18996.

The product of its digits is 419904, while the sum is 48.

The square root of 28993629 is about 5384.5732421428. The cubic root of 28993629 is about 307.2091823800.

The spelling of 28993629 in words is "twenty-eight million, nine hundred ninety-three thousand, six hundred twenty-nine".