28100541 has 16 divisors (see below), whose sum is σ = 45339264. Its totient is φ = 15112704.

The previous prime is 28100531. The next prime is 28100551. The reversal of 28100541 is 14500182.

28100541 = T₂₈₃₀ + T₂₈₃₁ + ... + T₂₈₃₆.

It is an interprime number because it is at equal distance from previous prime (28100531) and next prime (28100551).

It is not a de Polignac number, because 28100541 - 2⁵ = 28100509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28100521) 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, 39000 + ... + 39713.

It is an arithmetic number, because the mean of its divisors is an integer number (2833704).

Almost surely, 2^28100541 is an apocalyptic number.

28100541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28100541 is a deficient number, since it is larger than the sum of its proper divisors (17238723).

28100541 is a wasteful number, since it uses less digits than its factorization.

28100541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78740.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 28100541 is about 5300.9943406874. The cubic root of 28100541 is about 304.0219174237.

The spelling of 28100541 in words is "twenty-eight million, one hundred thousand, five hundred forty-one".