28419501 has 16 divisors (see below), whose sum is σ = 42120000. Its totient is φ = 16897920.

The previous prime is 28419493. The next prime is 28419509. The reversal of 28419501 is 10591482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28419493) and next prime (28419509).

It is not a de Polignac number, because 28419501 - 2³ = 28419493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28419509) 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, 6376 + ... + 9873.

It is an arithmetic number, because the mean of its divisors is an integer number (2632500).

Almost surely, 2^28419501 is an apocalyptic number.

It is an amenable number.

28419501 is a deficient number, since it is larger than the sum of its proper divisors (13700499).

28419501 is a wasteful number, since it uses less digits than its factorization.

28419501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16316.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 28419501 is about 5330.9943725350. The cubic root of 28419501 is about 305.1678767650.

It can be divided in two parts, 28419 and 501, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 28419501 in words is "twenty-eight million, four hundred nineteen thousand, five hundred one".